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Research work presented in International & National conferences

Strong correlation between structure and magnetic ordering in tetragonally distorted off-stoichiometric spinels Mn1.15Co1.85O4 and Mn1.17Co1.60Cu0.23O4

P. Pramanik, M. Reehuis, M. Tovar, A. Hoser, J.-U. Hoffmann, Y. S. Chen, J. G. Lin, B. Weise, A. Waske, and S. Thota
Phys. Rev. Materials 6, 034407,(2022)APS

Slow spin dynamics of cluster-glass spinel Zn(Fe1-xRux)2O4: role of Jahn-Teller active spin-1/2 Cu2+ ions at B-sites

Suchit Kumar Jena, Tapati Sarkar, Mouli Roy Chowdhury, Bruno Weise, Yajun Qi and Subhash Thota
Journal of Physics: Condensed Matter 34, 405801 (2022)IOP

Determination of the tricritical point, H–T phase diagram and exchange interactions in the antiferromagnet MnTa2O6

Maruthi R, Mohindar S Seehra, Sayandeep Ghosh, Rohit Medwal, Rajdeep S Rawat, Bruno Weise, Eun Sang Choi and Subhash Thota
Journal of Physics: Condensed Matter 34, 155801 (2022)IOP

Antiferromagnetic short-range order and cluster spin-glass state in diluted spinel ZnTiCoO4

Mouli Roy Chowdhury, Mohindar S Seehra, Prativa Pramanik, Sayandeep Ghosh, Tapati Sarkar, Bruno Weise and Subhash Thota
Journal of Physics: Condensed Matter 34, 275803 (2022)IOP

Anisotropic Ferromagnetic Organic Nanoflowers

Sajitha Sasidharan, Sayandeep Ghosh, Rishi Sreedhar, Kalpana Kumari, Subhash Thota, Vibin Ramakrishnan
Journal of Physical Chemistry C 126, (19) 8511 (2022)ACS

Effect of Ce substitution on the local magnetic ordering and phonon instabilities in antiferromagnetic DyCrO3 perovskites

S. Das, R. K. Dokala, B. Weise, R. Medwal, R. S. Rawat, P. K. Mishra and S. Thota
Journal of Physics: Condensed Matter 34, 345803 (2022)IOP

Magnetic ground state and exchange interactions in the Ising chain ferromagnet CoNb2O6

Subhash Thota, Sayandeep Ghosh, Maruthi R, Deep C. Joshi, Rohit Medwal, Rajdeep S. Rawat, and Mohindar S. Seehra
Phys. Rev. B 103, 064415,(2021)APS

Lattice dynamics and magnetic exchange interactions in GeCo2O4: A spinel with S=1/2 pyrochlore lattice

P. Pramanik, S. Singh, M. R. Chowdhury, S. Ghosh, V. Sathe, K. M. Rabe, D. Vanderbilt, M. S. Seehra, and S. Thota
Phys. Rev. B 104, 014433,(2021)APS

Magnetization Reversal, Field-Induced Transitions and H-T Phase Diagram of Y1-xCexCrO3

Ravi Kiran Dokala, Shaona Das, Bruno Weise, Rohit Medwal, Rajdeep Singh Rawat, Subhash Thota
Journal of Physics: Condensed Matter 34, 065801 (2021)IOP

Tailoring the electronic structure and magnetic properties of pyrochlore Co2Ti1- xGexO4: a GGA+ U ab initio study

S Ghosh, S Singh, D Das, S Ghosh, PK Mishra, S Thota
Journal of Physics: Condensed Matter 33 (14), 145504 (2021)IOP

Magnetic field-temperature phase diagram, exchange constants and specific heat exponents of the antiferromagnet MnNb2O6

Maruthi R, S Ghosh, M. S. Seehra, D. C. Joshi, M. R. Chowdhury, R. Medwal, R. S. Rawat, B. Weise, S Thota
Journal of Physics: Condensed Matter 33, 345801 (2021)IOP

Dynamical response of localized electron hopping and dipole relaxation in Cu1-xZnxFe2O4 magnetoceramics

Suchit Kumar Jena, Deep Chandra Joshi, Sayandeep Ghosh, Kiran Dasari, Subhash Thota
Journal of Physics. D: Applied Physics 54, 425303 (2021)IOP

The role of epitaxial strain on the electronic and magnetic structure of La0.7Sr0.3MnO3/LaCoO3 bilayers

S. Das, S. Ghosh, R. G. Tanguturi, R. Medwal, S. Gupta, R. K. Dokala, R.S. Rawat, S. Das, and S. Thota
AIP Advances 11, 125115 (2021)AIP-Editorial Pick Article

Neutron diffraction evidence for local spin canting, weak Jahn–Teller distortion, and magnetic compensation in Ti1-xMnxCo2O4 spinel

P. Pramanik, D.C. Joshi, M. Reehuis, A. Hoser, J-U Hoffmann, R. S. Manna, T. Sarkar and S. Thota
Journal of Physics: Condensed Matter 32, 245801,(2020)IOP

Cluster Glass Behavior in Orthorhombic SmFeO3 Perovskite:Interplay Between Spin Ordering and Lattice Dynamics

M. Kamal Warshi, Anil Kumar, Aanchal Sati, S. Thota, K. Mukherjee, Archna Sagdeo, and Pankaj R. Sagdeo
Chem. Mater. 32, 1250,(2020)ACS

Identification of a Fe-Dependent Optical Mode in CuAl1-xFexO2

M. A. Aziziha, S. Akbarshahi, S. Pittala, S. Ghosh, R. Sooriyagoda, A. H. Romero, S. Thota, A. D. Bristow, M. S. Seehra, M. B. Johnson
J. Phys. Chem. C, 125, 6, 3577 (2021) ACS

Electronic Structure and Magnetic Exchange Interactions in Zn diluted CuFe2O4 Magnetoceramics

Suchit Kumar Jena, Deep Chandra Joshi, Zhuo Yan, Yajun Qi, Sayandeep Ghosh, and Subhash Thota
Journal of Applied Physics, 128, 073908 (2020)AIP

Elastic Strain control of Electronic Structure, and Magnetic Properties of [Pr1-xCaxMnO3/SrTiO3]15 Superlattices

R. K. Dokala, S. Das, D. C. Joshi, S. Ghosh, Z. Yan, Y. Qi, S. Das and S. Thota
Journal of Applied Physics, 127, 175303,(2020)AIP

Antiferromagnetism, spin-glass State, H-T phase diagram, and inverse magneto-caloric effect in Co2RuO4

Sayandeep Ghosh, Deep Chandra Joshi, Prativa Pramanik, Suchit K Jena, Suresh Pittala, Tapati Sarkar, Mohindar S Seehra and Subhash Thota
J. Phys.: Condens. Matter 32, 485806,(2020)IOP

Low-temperature anomalous spin correlations and Kondo effect in ferromagnetic SrRuO3/LaNiO3/La0.7Sr0.3MnO3 trilayers

Sayandeep Ghosh, R. G. Tanguturi, P. Pramanik, D. C. Joshi, P. K. Mishra, S. Das, and S. Thota
Physical Review B. 99, 115135,(2019)APS

Effects of radiative local heating on metal solidification during selective laser melting for additive manufacturing

Beom Seok Kim, Namkyu Lee, Subhash Thota, Thomas Gemming, and Hyung Hee Cho
Applied Surface Science 496, 143594,(2019)ScienceDirect

Phonon Dynamics in Anisotropic Dilute CuAl1–xFexO2 Delafossite Alloys by a Weighted Dynamical Matrix Approach

M. Aziziha, S. Akbarshahi, S. Ghosh, P. Pramanik, J. P. Lewis, A. H. Romero, S. Thota, M. S. Seehra, M. B. Johnson
Journal of Physical Chemistry C, 123, 50, 30604 (2019)ACS

Magnetic ground state, field-induced transitions, electronic structure, and optical band gap of the frustrated antiferromagnet GeCo2O4

P. Pramanik, S. Ghosh, P. Yanda, D. C. Joshi, S. Pittala, A. Sundaresan, P. K. Mishra, S. Thota, and M. S. Seehra
Physical Review B. 99, 134422,(2019)APS

Cationic distribution, exchange interactions, and relaxation dynamics in Zn-diluted MnCo2O4 nanostructures

P. Pramanik, D. C. Joshi, N. Tiwari, T. Sarkar, S. Pittala, O.O. Salman, M.-M. Manga, and S. Thota
Journal of Applied Physics 125, 124302(2019)AIP

Thermal hysteresis and vibrational excitations in NiO containing NaNbO3

R. T. George, T. A. Dar, D. C. Joshi, V. Sathe, A. K. Rathore and S. Thota
Journal of Physics D: Applied Physics 52, 115301(2019)IOP

Role of phase transition in the dielectric and magnetic properties of Na containing NiO

D. C. Joshi, P. Pramanik, M. K. Warshi, S.Ghosh, A. Meher, K.Dasari, S.Thota
Journal of Physics and Chemistry of Solids 130, 154 (2019)Elsevier

Magnetic exchange interactions and band gap bowing in NixMg1-xO: A GGA + U density functional study

Sayandeep Ghosh, Suchit Kumar Jena, Pankaj Kumar Mishra, Mohindar S. Seehra, and Subhash Thota
Journal of Applied Physics 126, 233904 (2019)AIP

Role of dilution on the electronic structure and magnetic ordering of spinel cobaltites

Sayandeep Ghosh, Sobhit Singh, Deep Chandra Joshi, Prativa Pramanik, Subhradip Ghosh, Pankaj Kumar Mishra, and Subhash Thota
Physical Review B 98, 235119 (2018)APS

Interfacial magnetism in LaSrMnO3/LaNiO3 ultrathin superlattices

Sujit Das, Sayandeep Ghosh, Prativa Pramanik, Deep Chandra Joshi, and Subhash Thota
Journal of Physics D: Applied Physics 51, 325001 (2018)IOP

Structural and magnetic properties of La0.7Sr0.3MnO3/LaCoO3 heterostructures

S. Thota, K. Roychowdhury, V. Thakare, S. C. Ganguli, Z. H. Chen, E. J. Guo and S. Das
Applied Physics Letters 113, 122405 (2018)AIP

Cubic phase stability, optical and magnetic properties of Cu-stabilized zirconia nanocrystals

Prativa Pramanik, Sobhit Singh, Deep Chandra Joshi, Ayan Mallick, Kelly Pisane, Aldo H Romero, Subhash Thota and M S Seehra
Journal of Physics D: Applied Physics 51, 225304 (2018)IOP

Nature of magnetic ordering in nanocomposites of Zn1-pNipO and NiO

D. C. Joshi, P. Pramanik, R. T. George, T. Sarkar, and S. Thota
Physica E: Low-dimensional Systems and Nanostructures 103,46–52(2018)Elsevier

Effect of NiO substitution on the structural and dielectric behaviour of NaNbO3

R. T. George, D. C. Joshi, S. Nayak, N. Tiwari, R. N. Chauhan, P. Pramanik, T. A. Dar, S. Ghosh, S. Thota
Journal of Applied Physics 123 (5), 054101 (2018)AIP

Neutron diffraction study of the inverse spinels Co2TiO4 and Co2SnO4

S. Thota, M. Reehuis, A. Maljuk, et al.
Physical Review B 96(14), 144104 (2017) APS

Modulation of Peptide Based Nano-Assemblies with Electric and Magnetic Fields

G. Pandey, J. Saikia, S. Sasidharan, D. C. Joshi, S. Thota, H. B. Nemade, N. Chaudhary & V. Ramakrishnan
Nature Scientific Reports, 7, 2726 (2017)

Magnetic phase diagram of Co(Cr1-xAlx)2O4

R. Padam, T. Sarkar, R. Mathieu, S. Thota and D. Pal
Journal of Applied Physics 122(7),073908,(2017) AIP

Finite-size-scaling and Exchange-Bias in SrRuO3/LaNiO3/SrRuO3 Trilayers

S. Thota, S. Ghosh, S. Nayak, D. C. Joshi, P. Pramanik, K. Roychowdhury, and S. Das
Journal of Applied Physics 122, 124304,(2017) AIP

Dielectric Properties of (1-x)KNbO3xNiO Two-Phase Composites

R. Soni, R George, D C Joshi, S Nayak, P Pramanik, P Suresh, T A Dar and S Thota
Journal of Physics D. Applied Physics, 50, 415305 (2017) IOP

Structural and Dielectric Properties of the Fluorite-Type LaxCe1- xO2-d Ceramics

K. Singh, K. Kumar, S. Nayak, D.C. Joshi, M.M. Alom, S. Thota, A Chowdhury
Journal of Physics D. Applied Physics, 50, 495601(2017) IOP

Size-dependent structural, magnetic, and optical properties of MnCo2O4 nanocrystallites

S. Singh, P. Pramanik, S. Sangaraju, A. Mallick, L. Giebeler, S. Thota
Journal of Applied Physics 121 (19), 194304 (2017)AIP

Effects of Cu doping on the electronic structure and magnetic properties of MnCo2O4 nanostructures

P. Pramanik, S. Thota, S. Singh, D. C Joshi, B. Weise, A. Waske, M. S Seehra
Journal of Physics: Condensed Matter 29 (42), 425803 (2017)IOP

Magnetic exchange interactions and dielectric studies of Zn1–xNixO–NiO composites

D.C. Joshi, P. Pramanik, S. Nayak, K. Dasari, R.J. Choudhary, S.Thota
Journal of Physics D. Applied Physics, 50, 325002 (2017) IOP

Spectroscopic studies of Co2TiO4 and Co3O4 two-phase composites

S. Nayak, K. Dasari, D. C. Joshi, P. Pramanik, R. Palai, V. Sathe, R. N. Chauhan, N. Tiwari and S. Thota
Physica Status Solidi B, 253 (11), 2270 (2016) Wiley

Reentrant spin-glass behavior and bipolar exchange-bias effect in “Sn” substituted cobalt-orthotitanate

S. Nayak, D. C. Joshi, M. Krautz, A. Waske, J. Eckert and S. Thota
Journal of Applied Physics, 119, 043901 (2016) AIP

Low-temperature anomalous magnetic behavior of Co2TiO4 and Co2SnO4

S. Nayak, K. Dasari,D. C. Joshi,P. Pramanik,R. Palai,A. Waske,R. N. Chauhan, N. Tiwari,T. Sarkar,and S. Thota
Journal of Applied Physics 120, 163905 (2016) AIP

Peculiarities of the temperature dependence of electron spin resonance and Raman studies of Zn1-xNixO/NiO two-phase nanocomposites

D. C. Joshi, S. Nayak, A. Kumar, A. Mohanta, D. Pamu and S. Thota
Journal of Applied Physics, 119, 074303 (2016) AIP

Magnetic compensation, field-dependent magnetization reversal, and complex magnetic ordering in Co2TiO4

S. Nayak, S. Thota, D. C. Joshi, M. Krautz, A. Waske, A. Behler, J. Eckert, T. Sarkar, M. S. Andersson, R. Mathieu, V. Narang, and M. S. Seehra
Physical Review B, 92, 214434 (2015) APS

Localized charge carrier transport properties of Zn1-xNixO/NiO two-phase composites

D. C. Joshi, K. Dasari, S. Nayak, R. Palai, P. Suresh, S. Thota
Journal of Electronic Materials, 45, 2059 (2016) Springer

The X-ray photoelectron spectroscopy and high-temperature structural studies of Zn1-xNixO/NiO two-phase composites

D. C. Joshi, S. Nayak, P. Suresh, K. S. Suresh, B.V.M. Kumar, S. Thota
Physica Status Solidi (b) ,67, 523 (2015)

On the nature of magnetic state in the spinel Co2SnO4

S. Thota, V. Narang, S. Nayak, S. Sambasivam, B.C. Choi, T. Sarkar, M. S. Andersson, R. Mathieu, and M. S. Seehra
Journal of Physics.: Condensed Matter, 27, 166001 (2015) IOP

Addendum: Co-existence of ferrimagnetism and spin-glass state in the spinel Co2SnO4

S. Thota and M. S. Seehra
Journal of Appled Physics 118, 129901 (2015)

The ac-magnetic susceptibility and dielectric response of complex spin-ordering process in Mn3O4

S. Thota, K. Patyal, S. Nayak, Ch. Simon, J. Kumar and W. Prellier
Journal of Applied Physics 116, 103906 (2014)

The dielectric behavior of Zn1-xNixO/NiO two-phase composites

D. C. Joshi, S. Thota, S. Nayak. D. D. Harish, D. Pamu, Md. Qureshi
Journal of Physics D: Applied Physics 47, 435305 (2014)

Dielectric Response and AC-conductivity Studies of Gd2O3-Contained K0.5Na0.5NbO3 Piezoelectric Ceramics

M. Peddigari, S. Thota, D. Pamu
IEEE Transactions on Dielectrics and Electrical Insulation, 22, 3668 (2015)

Dielectric and ac-conductivity studies of Dy2O3 doped KNaNbO3 ceramics

M. Peddigari, S. Thota, D. Pamu
AIP Advances 4(8), 087113 (2014)

Ion induced secondary electron emission, Optical and hydration resistance behavior of MgO, Mg-Mo-O and Mg-Ce-O thin films

A. Kumar, S. Thota, D. Deva and J. Kumar
Thin Solid Films 556, 260 (2014)

Structural and Dielectric studies of Co doped MgTiO3 thin-films fabricated by RF magnetron sputtering

T. S. Kumar, P. Gogoi, S. Thota, D. Pamu
AIP Advances 4, 067142 (2014)

Size-dependent shifts of the Neel temperature and optical band-gap in NiO nanoparticles

S. Thota, J. H. Shim, and M. S. Seehra
Journal of Applied Physics, 114, 214307, (2013) Letters

Co-existence of ferrimagnetism and spin-glass state in the spinel Co2SnO4

S. Thota, and M. S. Seehra
Journal of Applied Physics, 113, 203905,(2013)

Memory Effects and Relaxation Dynamics of MnCo2O4 Nanocrystallites

S. Thota, S. K. Das, A. Kumar, S. Sangaraju and B. C. Choi
IEEE Transactions on Magnetics, 49, 1020, (2013)

Formation mechanism, Optical and Magneto-dielectric studies of new cubic spinel MgMnO3

S. Thota, K. Singh, B. Prasad, J. Kumar, Ch. Simon and W. Prellier
AIP Advances 02, 032140 (2012)

Synthesis, Structure and Magnetic behaviour of Nanoparticles of Cubic ZnMnO3

J. Rall, S. Thota, J. Kumar, and M. S. Seehra
Applied Physics Letters 100, 252407 (2012)

Synthesis and Optical Characterization of Mg1-xNixO Nanostructures

N. Budiredla, A. Kumar, S. Thota, and J. Kumar
Nanomaterials 10, 5402 (2012)

On the derivation of magnetocaloric properties in ferrimagnetic spinel-Mn3O4

S. Thota, F. Guillou, V. Hardy, A. Wahl, W. Prellier and J. Kumar
Journal of Applied Physics, 109, 053902, (2011)

Magnetic transitions in Mn3O4 and an anomaly at 38 K in magnetization and specific heat

F. Guillou, S. Thota, W. Preellier, J. Kumar and V. Hardy
Physics Review B, 83, 094423, (2011)

Magnetic frustration and short-range ordering in cubic defect spinel MgMnO3

M. S. Seehra, V. Singh and S. Thota
Journal of Applied Physics, 110, 113907, (2011) Letters

Anisotropic magnetocaloric efect in all-ferromagnetic (La0.7Sr0.3MnO3/SrRuO3) superlattices

S. Thota, Q. Zhang,F. Guillou, U. Luders, W. Preellier, A. Wahl and P. Padhan
Applied Physics Letters, 97, 112506 [1-3], (2010)

Synthesis and magnetic properties of nanocrystals of cubic defect spinel MgMnO3

M.S. Seehra, V. Singh, S. Thota, B. Prasad and J. Kumar
Applied Physics Letters, 97, 112507 [1-3], (2010)

Magnetocaloric effect and improved relative cooling power in (La0.7Sr0.3MnO3/SrRuO3) superlattices

Q. Zhang, S. Thota, ,F. Guillou, A. Wahl, P. Padhan, V. Hardy and W. Preellier
J. Phys: Conden. Matter, 23, 052201, (2010) Fast track Communication Citations - 10

Optical, electrical and magnetic properties of Co3O4 nanocrystallites obtained by thermal decomposition of sol–gel derived oxalates

S. Thota, A. Kumar, J. Kumar
Materials Science and Engineering: B, 164, 30-37 (2009)

Ferromagnetic ordering in PLD grown Zn1-xNixO/ZnO bilayer thin films

S. Thota, L.M. Kukreja and J. Kumar
Thin Solid Films, 517, 750-754(2008)

A comparative study of magnetic properties of bulk and nanocrystalline Co3O4

P.Dutta, M.S.Seehra, S.Thota and J.Kumar
Journal of Physics Condesed Matter, 20, 015218[1-8](2008) Citations - 102

Sol-gel synthesis and behaviour of Ni containing ZnO nano-particles

S.Thota and J.Kumar
Journal of Nanoscience and Nanotechnology, 8, 4073-80 (2008)

Preparation, microstructure and optical absorption of NiO thin films

A.K. Srivastava, S. Thota and J. Kumar
Journal of Nanoscience and Nanotechnology, 8, 4111-15 (2008)

Sol- gel synthesis and anomalous magnetic properties of NiO nano-particles

S. Thota and J. Kumar
Journal of Physics and Chemistry of Solids, 68, 1951-64 (2007)

On the sol-gel synthesis and thermal, structural, and magnetic studies of transition metal(Ni, Co, Mn) containing ZnO powders

S. Thota, T. Dutta and J. Kumar
Journal of Physics Condensed Matter, 18, 2473-86 (2006)

Formation and magnetic behaviour of manganese oxide nanoparticles

S. Thota, B. Prasad and J. Kumar
Materials Science and Engineering: B, 167, 153-160 (2010)

Sol-gel synthesis of highly luminesent magnesium oxide nanocrystals

A. Kumar, S. Thota, S. Varma and J. Kumar
Journal of Luminescence, 131, 640 (2010)

Sol-gel synthesis and optical behavior of Mg-Ce-O nanocrystals

A. Kumar, S. Thota, S. Sivakumar, S. Priya and J. Kumar
J. Sol Gel. Sci. Technol. 67, 1047 (2013)

Research work presented in International and National conferences

AC- conductivity and Dielectric Relaxation in Columbite MnNb2O6

Maruthi R, V. P. Khadse and S. Thota
The international conference on “Emergent Techniques and Functional Materials (ICETFM-2022), 12-14 July, 2022

Investigation of the Crystal Structure and Vibrational Excitations in Cu and Ru co-substituted ZnFe2O4

V. P. Khadse, S. K. Jena, M. Roy Chowdhury and S. Thota
The international conference on “Emergent Techniques and Functional Materials (ICETFM-2022), 12-14 July, 2022

Probing the Magnetic Field Induced Transitions in Mn substituted Pyrochlore Magnet GeCo2O4

A. D. Singha, H. Singh, S. K. Jena, M. R. Chowdhury and S. Thota
The international conference on “Emergent Techniques and Functional Materials (ICETFM-2022), 12-14 July, 2022

Structural and Magnetic Properties of Spin-3/2 Frustrated Kagomé Magnet Co3V2O8

H. Singh, A. D. Singha, S. K. Jena, S. Ghosh, and S. Thota
The international conference on “Emergent Techniques and Functional Materials (ICETFM-2022), 12-14 July, 2022

Antiferromagnetic Spin-glass Properties of few Spinels: The Role of Dilution and Geometrical Frustration

Subhash Thota
IIT and NIMS Materials Science Workshop December 6-9, 2021

Coexistence of Ferrimagnetic Ordering and Spin-glass state in Spinel Zn(Fe1-xRux)2O4: Role of Jahn-Teller Active Spin-1/2 Cu2+ ions at B-sites

Suchit Kumar Jena, Sayandeep Ghosh and Subhash Thota
Scientific Programme of National conference on Quantum Condensed Matter(QMAT - 2021)December 08 – 11, 2021
QMAT 2021

Phonon Dispersion in Anisotropic Dilute Alloys by Weighted Dynamical-Matrix Approach

Mina Aziziha, Saeed Akbarshahi, Sayandeep Ghosh, Prativa Pramanik, James Patrick Lewis, Aldo H Romero, Suresh Pittala, Subhash Thota, Mohindar S Seehra, and Matthew Bruce Johnson
APS March Meeting 2020, Volume 65, Number 1, Session P63: Defects: Structure and Strain 1, 2:30 PM–5:18 PM, Wednesday, March 4, 2020, Room: Mile High Ballroom 4D, Denver, Colorado, USA
APS March Meeting 2020

Electronic Structure of the Glassy Antiferromagnetic Spinel ZnTiCoO4: A DFT+U Approach

Mouli Roy Chowdhury, Sayandeep Ghosh, Sobhit Singh, Subhradip Ghosh, Mohindar S Seehra and Subhash Thota
Scientific Programme of National conference on Quantum Condensed Matter(QMAT - 2021)December 08 – 11, 2021
QMAT 2021

Structural and Magnetization Studies of Cu, Mn co-doped Franklinite

S. K. Jena, A. K. Hota, S. Ghosh, M. R. Chowdhury, Maruthi R, S. Thota
Conference on Condensed Matter Physics (CCMP) 2021, Physical Research Laboratory, 16-18th August, 2021
CCMP-2021

Crystal Structural and Micro Raman Studies of Mg1-xNixO Solid Solutions

S. K. Jena, S. Singh, S. Ghosh, A. Keelu, P. Pramanik and S. Thota
UGC-SAP (DRS II) Sponsored SECOND NATIONAL CONFERENCE ON HARD AND SOFT CONDENSED MATTER PHYSICS, (NCHSCMP-2019), March 4-6,2019, Tezpur, Assam, India

Negative magnetization and field induced transitions in Y1-xCexCrO3

R. K. Dokala, S. Das and S. Thota
Scientific Programme of National conference on Quantum Condensed Matter(QMAT - 2021)December 08 – 11, 2021
QMAT 2021

Magnetic properties of Y1-xCexCrO4 nanocrystals

R. K. Dokala, S. Das and S. Thota
MRSI-AGM Materails Conclave (MRSI-AGM), IIT Madras, 20-23 December, 2021
MRSI-AGM-2021

EPR and Magnetic properties of the antiferromagnet MnNb2O6

Maruthi R and S. Thota
Conference on Condensed Matter Physics (CCMP) 2021, Physical Research Laboratory, 16-18th August, 2021
CCMP-2021

Structural and Vibrational Excitations in Dy1-xCexCrO3 Solid solutions

S. Das, R. K. Dokala and S. Thota
MRSI-AGM Materails Conclave (MRSI-AGM), IIT Madras, 20-23 December, 2021
MRSI-AGM-2021

Altered Antiferromagnetic State and Exchange Bias of Bulk Co3O4 Granular Matrix Dispersed in Nonmagnetic CeO2

S. Singh, P. Pramanik, D. C. Joshi and S. Thota
Research Conclave-2019, 14-17 March 2019, IIT Guwahati, India

Electron Magnetic Resonance of Mangano-Columbite MnNb2O6

Maruthi R, R. Medwal, R. Singh and S. Thota
MRSI-AGM Materails Conclave (MRSI-AGM), IIT Madras, 20-23 December, 2021
MRSI-AGM-2021

Tunable Spin-reorientation Transitions in Canted Antiferromagnet Dy1-xCexCrO3

Shaona Das, Ravi Kiran Dokala and Subhash Thota
Scientific Programme of National conference on Quantum Condensed Matter(QMAT - 2021)December 08 – 11, 2021
QMAT 2021

Compositional dependence of Vibrational Excitations in Fe substituted MnCo2O4 Ferrimagnetic Spinels

S. Singh, P. Pramanik, S. K. Jena, B. Yadav, M. Sehrawat and S. Thota
UGC-SAP (DRS II) Sponsored SECOND NATIONAL CONFERENCE ON HARD AND SOFT CONDENSED MATTER PHYSICS, (NCHSCMP-2019), March 4-6,2019, Tezpur, Assam, India

Evidence for Field Induced Phase Transitions and Enhanced Long-range Ordering in Fe doped MnCo2O4

B. Yadav, S. Ghosh, M. Sehrawat, S. Singh, P. Pramanik, S.K. Jena, D.C. Joshi and S. Thota
Research Conclave-2019, 14-17 March 2019, IIT Guwahati, India

Magnetic Properties of Spin Ising Chain Manganocolumbite MnNb2O6

Ayush Vardhan Singh, Prativa Pramanik, Shalini Kushwaha, Sayandeep Ghosh, Maruthi Ramachandraiah, Subhash Thota
National Conference on Progresses in Material Science Research (PMSR-2020),February 4-6, 2020, Dibrugarh University, India

High Temperature Magnetization Studies of Mixed Spinel Cu1-xZnxFe2O4

S. K. Jena, S. Ghosh, S. Kushwaha, S. Sharma, D.C. Joshi and S. Thota
National Conference on Progresses in Material Science Research (PMSR-2020),February 4-6, 2020, Dibrugarh University, India

Pulsed Laser Growth of [Pr1-xCaxMnO3/SrTiO3]15 Superlattices

Ravi K. Dokala, Shaona Das, Sujt Das, Soumya R. Ratha, Maruthi R, Subhash Thota
National Conference on Progresses in Material Science Research (PMSR-2020),February 4-6, 2020, Dibrugarh University, India

Magnetic Exchange Bias and Spin-glass state in Cobaltorthoruthanate

S. Ghosh, A. V. Singh, S. Sharma, T. Sarkar, S. Thota
National Conference on Progresses in Material Science Research (PMSR-2020),February 4-6, 2020, Dibrugarh University, India

Structural, Morphological and Elemental Analysis of Manganocolumbite

Shalini Kushwaha, Suchit Kumar Jena, Ayush Vardhan Singh and Subhash Thota
National Conference on Progresses in Material Science Research (PMSR-2020),February 4-6, 2020, Dibrugarh University, India

Electronic Structure Studies of [La0.7Sr0.3MnO3/LaAlO3]15 Superlattices

Shaona Das, Ravi Kiran Dokala, Sujt Das, Sayandeep Ghosh, Subhash Thota
National Conference on Progresses in Material Science Research (PMSR-2020),February 4-6, 2020, Dibrugarh University, India

Complex Magnetic Ordering in Ultrathin Oxide Superlattices and Nanostructures

S. Thota (Invited Talk)
International Conference on Nano-Structured Materials and Devices (ICNSMD-2018), University of Delhi, India

Crystal structure and Magnetic Properties of Germanium doped MnCo2O42

M. Sehrawat, B.Yadav, S.Ghosh, S.Singh,P.Pramanik,S.K.Jena, D.C.Joshi and S. Thota
Research Conclave-2019, 14-17 March 2019, IIT Guwahati, India

Finite-Size Effects and Semi-Spin-Glass Behavior of Few Complex Spinels

S. Thota (Invited Talk)
International Conference on Materials for Energy Applications (ICME-18) December 06-08, 2018. S.S. Jain Subodh P.G. College Jaipur,India

Vibrational Raman Excitations and Broadband Dielectric Spectroscopy of Mg doped NiO

S. Mohapatra, S. K. Jena, A. Keelu, S. Singh, P. Pramanik, D.C. Joshi and S. Thota
Research Conclave-2019, 14-17 March 2019, IIT Guwahati, India

Density Functional Theory Studies of Co-based Spinels

S. Ghosh, S. Singh, P.K. Mishra, S. Thota
International Conference on Systems and Processes in Physics, Chemistry and Biology (ICSPPCB- 2018), 1-3 March, 2018, Silchar, Assam, India

Finite-Size effects in the Optical and Magnetic Properties of MnCo2O4 Nanostructures

S. Singh, P.Pramanik, M. S. Seehra, and S. Thota
American Physical Society (APS) March 13–17, 2017, New Orleans, Louisiana (USA), Bulletin of the American Physical Society

Structural and ac-electrical transport of Anti-ferroelectric NaNbO3 and NiO composites

R.T. George, T.A. Dar, D.C. Joshi, S. Nayak, S. Thota
International Conference on Systems and Processes in Physics, Chemistry and Biology (ICSPPCB- 2018), 1-3 March, 2018, Silchar, Assam, India

Morphotropic Phase Boundary Engineering and Dielectric Excitations in NaNbO3-MgMnO3 Composites

A. Meher, A. Thakur, D.C. Joshi, P.Pramanik and S. Thota
Research Conclave-2018, 8-11 March 2018, IIT Guwahati, India

Synthesis, Structural and Magnetic Properties of Ni1-xMgxO Nanostructures

S. K. Jena, S. Mohapatra, S. Singh, P. Pramanik, D.C. Joshi and S. Thota
Research Conclave-2018, 14-17 March 2019, IIT Guwahati, India

High Temperature Dielectric Behavior of Spin-1/2 Frustrated Kagome Magnet Co3V2O8

A. Thakur, P.Pramanik, D. C Joshi, A. Meher and S. Thota
Research Conclave-2018, 8-11 March 2018, IIT Guwahati, India

High frequency ac-electrical transport studies of ferroelectric KNaNbO3 and CuO composites

T.A. Dar, D.C. Joshi, S. Nayak, R.T. George, S. Ghosh , S. Thota
International Conference on Systems and Processes in Physics, Chemistry and Biology (ICSPPCB- 2018), 1-3 March, 2018, Silchar, Assam, India

Optical and Magnetization studies MnCo2-pCupO4 Ferrimagnetic Spinels

P.Pramanik, D. C. Joshi, and S. Thota
International Conference on Advanced Functional Materials (ICAFM 2017) 18-20, December, 2017, RGUKT, Basar, Nirmal-504107, Telangana State, India

Lead-free Ferroelectric KNbO3-NiO Two-Phase Composite

R. Soni, R. George, DC Joshi, P. Pramanik, S. Nayak, S. Ghosh, and S. Thota
Research Conclave-2018, 17-20 March 2017, IIT Guwahati, India

Vibrational Excitations in Ferrimagnetic Spinel MnCo2O4

P. Pramanik, D. C. Joshi, S. Ghosh, T. A. Dar, R. T. George, and S. Thota
National Workshop on Fluorescence and Raman Spectroscopy December 17-21, 2017, IIT Guwahati-781039, India

Investigation of the Structural and Dielectric properties of Antiferromagnetic CoO containing Wurtzite ZnO

M. M. Alom, S. Ghosh, D. C. Joshi, S. Nayak, P. Pramanik and S. Thota/span>
Research Conclave-2017, 17-20 March 2017, IIT Guwahati, India

Dielectric Behavior of Lead-free Ferroelectric NaNbO3-NiO Two-Phase Composits

R. T. George, D. C Joshi, R. Soni, P. Pramanik, S. Nayak, and S. Thota/span>
Research Conclave-2017, 17-20 March 2017, IIT Guwahati, India

High Frequency Dielectric Studies of Sodium Doped Mott-Insulators

S. Biswas, D. C. Joshi, T. Nagendrababu, P. Pramanik, S. Ghosh, T. A. Dar and S. Thota
5th International Conference on Advanced Nanomaterial and Nanotechnology (ICANN-2017),IIT Guwahati-781039, India

Raman Spectroscopic Studies of Piezoelectric Alkaline Niobate

R. T. George, S. Nayak, D. C. Joshi, S. Ghosh, T. A. Dar, and S. Thota
National Workshop on Fluorescence and Raman Spectroscopy December 17-21, 2017, IIT Guwahati-781039, India

High temperature Dielectric behavior of KNaNbO3 and CuO composites

T. A. Dar, D. C. Joshi, R. T. George and S.Thota
5th International Conference on Advanced Nanomaterial and Nanotechnology (ICANN-2017),IIT Guwahati-781039, India

The role of Na doping on the Antiferromagnetic ordering of NiO

D. C. Joshi, P.Pramanik, and S. Thota
International Conference on Advanced Functional Materials (ICAFM 2017) 18-20, December, 2017, RGUKT, Basar, Nirmal-504107, Telangana State, India

On the Vibrational Excitations in Ferroelectric KNbO3 and Antiferromagnetic MgMnO3 Composites

S. Nayak, R. Soni, R.T. George, T.A. Dar, D. C. Joshi, S.Thota
5th International Conference on Advanced Nanomaterial and Nanotechnology (ICANN-2017),IIT Guwahati-781039, India

Structural and Micro-Raman studies of Ferroelectric KNaNbO3 and CuO composites

T. A. Dar, D. C. Joshi, S. Nayak, R. T. George, S. Ghosh, and S. Thota
National Workshop on Fluorescence and Raman Spectroscopy December 17-21, 2017, IIT Guwahati-781039, India

Structural and Magnetic properties of Al doped Cobalt Orthotitanate

S. Ghosh, S. Nayak, P. K. Mishra and S. Thota
5th International Conference on Advanced Nanomaterial and Nanotechnology (ICANN-2017),IIT Guwahati-781039, India

A dynamical study of lead-free KNaNbO3-MnO2

R. George, R.Soni, D.C. Joshi, P.Pramanik, S.Nayak, S.Pittala and S. Thota
International Conference on Nanomaterials and Nanotechnology (ICNANO-2017), 1-3 March 2017, VBRI-Allahabad, India

X-ray photoelectron spectroscopic studies of Na doped NiO

D. C. Joshi, S. Nayak, P. Pramanik, R. George, R. Soni, K. Dasari and S. Thota
UGC-SAP (DRS III) Sponsored National Seminar on Advances in Materials Science, 24-25 March 2017, Gauhati University, Guwahati-781014, Assam, India.

Mott Variable-Range Hopping Conduction Mechanism in Ferroelectric KNbO3-NiO

R.Soni, R. George, D.C. Joshi, P. Pramanik1, S. Nayak and S. Thota
International Conference on Nanomaterials and Nanotechnology (ICNANO-2017), 1-3 March 2017, VBRI-Allahabad, India

Thermal Hysteresis in NaNbO3-NiO Two-Phase Composites

R. George, R. Soni, D. C. Joshi, S. Nayak, P. Pramanik, S. Ghosh, and S. Thota
UGC-SAP (DRS III) Sponsored National Seminar on Advances in Materials Science, 24-25 March 2017, Gauhati University, Guwahati-781014, Assam, India.

Synthesis and Characterization of MgCo2O4 Nanorods for Fuel Cell Applications

S. Nayak, D. C. Joshi, P. Pramanik and S. Thota
International Conference on Nanomaterials and Nanotechnology (ICNANO-2017), 1-3 March 2017, VBRI-Allahabad, India

On the nature of diffused first-order phase transition in NaNbO3-MnO2 two-phase composites

R. Soni, D. C. Joshi, S. Nayak, P. Pramanik, R. George, S.Ghosh, and S. Thota
UGC-SAP (DRS III) Sponsored National Seminar on Advances in Materials Science, 24-25 March 2017, Gauhati University, Guwahati-781014, Assam, India.

Quantum-size effects in MnCo2O4 Nanocrystals

P. Pramanik, S. K. Singh, R. Soni, D. C. Joshi, S. Nayak and S. Thota
International Conference on Nanomaterials and Nanotechnology (ICNANO-2017), 1-3 March 2017, VBRI-Allahabad, India

Dynamic ac-conductivity studies of Cobalt-Orthotitanate

S.Nayak, J. Dhillon, S. K. Deshpande, D. C. Joshi, P. Pramanik, R. George, and S. Thota
UGC-SAP (DRS III) Sponsored National Seminar on Advances in Materials Science, 24-25 March 2017, Gauhati University, Guwahati-781014, Assam, India.

Ferrimagnetic behavior and Optical properties of MnCo2-pCupO4Nanostructures

P. Pramanik, D. C. Joshi, and S. Thota
National Conference on Nanomaterials and its Applications (NCNA-17), 20-21 Sept, 2017, Golaghat-785621, Assam, India.

Electronic structure and Dielectric studies of Na doped NiO

D. C. Joshi, P. Pramanik, T. Nagendrababu and S. Thota
National Conference on Nanomaterials and its Applications (NCNA-17), 20-21 Sept, 2017, Golaghat-785621, Assam, India.

Low-Temperature anomalous magnetic behavior of TiCo2O4

S. Thota, K. Dasari, S. Nayak, D. C. Joshi, P. Pramanik, A. Waske and T. Sarkar
5th IEEE International Conference on Microwave Magnetics, The University of AlabamaTuscaloosa, 5-8 June, 2016, AL, USA.

Compositional dependence of structural and X-ray photoelectron spectroscopic studies of Zn1-xNixO/NiO Two-Phase Composites

D. C. Joshi, S. Nayak, P. Pramanik, K. Dasari, R. Palai, Md. Qureshi and S. Thota
2nd International Conference on Materials Science and Technology, St. Thomas College Pala Arunapuram, Kottayam, Kerala, India

X-ray Photoelectron Spectroscopy and Optical properties of MnCo2O4 Nanostructures

P. Pramanik, D. C. Joshi, S. Nayak, S Sambasivam, B. C. Choi, and S. Thota
2nd International Conference on Materials Science and Technology, St. Thomas College Pala Arunapuram, Kottayam, Kerala, India

Structural and Magnetic properties of Cu doped Cobalt Orthotitanate

S. Nayak, D. C. Joshi, P. Pramanik, M. Krautz, A. Waske and S. Thota
2nd International Conference on Materials Science and Technology, St. Thomas College Pala Arunapuram, Kottayam, Kerala, India

The localized charge carrier transport properties of Zn1-xNixO/NiO (0.3 < x < 1) two-phase composites

D. C. Joshi, K. Dasari, S. Pittala, S. Nayak and S. Thota
57th Electronic Materials Conference, The Ohio State University, Columbus, Ohio, 24-25 June 2015, USA.

Effect of ‘Na' Doping on the Structural, Dielectric and Electronic Characteristics of Wide Band-Gap NiO (Conference Proceedings)

D. C. Joshi, K. Dasari, S. Nayak, P. Pramanik, P. Suresh, S. Pittala, and S. Thota
9TH WORKSHOP ON FRONTIER IN ELECTRONICS (WOFE-2015) & 2nd WORKSHOP ON MULTIFUNCTIONAL NANOMATERIALS (WMN-15) Dec 15-18, 2015, CARIBE HILTON HOTEL, San Juan, PR, USA

Micro-Raman and Electron Spin Resonance studies of Co3-xTixO4

S. Nayak, D. C. Joshi and S. Thota
2nd International Conference on Nanotechnology ICNT-2015 & Indo-USA joint symposium, Haldia (W.B), India

On the growth mechanism and Electron Spin Resonance studies of cubic-phase ZrO2 nanostructures stabilized with Cu2+

S. Thota, S. Nayak, A. Mallick, D. C. Joshi, S. Sambasivam and Md. Qureshi
2nd International Conference on Nanotechnology ICNT-2015 & Indo-USA joint symposium, Haldia (W.B), India

Growth mechanism and Electron-Spin-Resonance studies of Zn1-xNixO/NiO two-phase nanocomposite (IEEE Xplore Conference Proceedings)

D. C. Joshi, D.D. Harish, D. Roy, S. Nayak, Md. Qureshi, R.L.N. Sai prasad, T. Shiyani, D. Pamu, S. Thota
2nd IEEE International Conference on Emergin Electonics ICEE-2014, 3-6 December-2014, IISc Bangalore, Karnataka (India)

On the cubic phase stability and magnetic properties of Cu doped ZrO2 Bulletin of American Physical Society

S. Thota, K. Pisane, S. Singh, and M.S. Seehra, APS, 3-7 March 2014 Meeting, Denver Colorado (USA)

Effect of Cu doping on the magnetism of MnCo2O4 Cubic spinels Bulletin of American Physical Society

S. K. Singh, M.S. Seehra, and S. Thota, APS, 3-7 March 2014 Meeting, Denver Colorado (USA)

Broadband dielectric studies of Zn1-xNixO/NiO ceramics for varistor device applications

D. Dayapule, P. Mahesh, T.S. Kumar, D. Pamu and S. Thota
6th International conference on Nanoscience and Nanotechnology, Chandigarh, Punjab, India, March 3-5, (2014)

Dielectric spectroscopy of Dy2O3 doped (K0.5Na0.5)NbO3

P. Mahesh, S. Thota and D. Pamu
58th Department of Atomic Energy-Solid State Physics Symposium, Thapar University, India, Dec 17-21, (2013)

The role of surface effects on the optical behavior of nanocrystalline NiO

S. Thota, S. K. Singh, A. Mallick,(AIP Conference Proceedings, 1536, 521 (2013))
International Conference on Recent Trends in Applied Physics & Mat. Sc(RAM), Bikaner, India, Feb 1-2, 2013

Phase evaluation and Optical studies of ZrMnO2 and ZrCoO2 nanocrystallites

S. Thota, A. Ansari, A. Mallick, S. K. Singh, and J. Kumar (AIP Conference Proceedings, 1536, 113 (2013))
International Conference on Recent Trends in Applied Physics and Materials Science (RAM 2013), Bikaner, 1-2-2013

Memory effects and Relaxation dynamics of MnCo2O4

S. Thota, S. K. Das, A. Kumar, S. Sangaraju and B. C. Choi
IEEE International conference on Microwave magnets (ICMM), Kaiserslautern, Germany, Aug 26-29, 2012

Dielectric response of the complex spin ordering process in Mn3O4

S. Thota, K. Singh, D. Pamu, Ch. Simon and W. Prellier
The International conference on Nanoscience and Technology (ICONSAT), Hyderabad, India, Jan 20-23, 2012

Synthesis, structure, and magnetic analysis of the cubic defect spinel ZnMnO3

M. S. Seehra, J. D. Rall, S. Thota and J. Kumar
56 International conference on Magnetism and Magnetic Materials (MMM), Scottsdale, USA, Oct-30, 2011

Effect of annealing on the structural and optical properties of nanocrystalline MgTiO3 thin films

T. S. Kumar, R. K. Bhuyan, S. Thota, A. R. James and D. Pamu
The International conference on Nanoscience and Technology (ICONSAT), Hyderabad, India, Jan 20-23, 2012

Influence of binary mixed phase manganese oxides on the magnetic properties of Mn2O3 nanocrystallites

S. Thota, A. Kumar, T. Shiyani and J. Kumar
2nd International conference on Advanced Nanomaterials and Nanotechnology (ICANN-2011), IIT Guwahati, 8-12-11

Optical and magnetic studies of Zn1-2yNiyCoyO degenerate semi-magnetic semiconductors

S. Thota and J. Kumar AIP Conference Proceedings, 1447, 1047 (2012)
56th DAE-Solid State Physics Symposium, SRM University, India, December 19-23, 2011

Recent Progress in artificial superlattices

U. Luders, A. David, S. Thota, R. Fresard and W. Prellier
Abstracts of the 18th International Vacuum Congress, Beijing, China, August 23-27, 2010

Magnetocaloric effect and enhanced refrigeration efficiency in LaSrMnO3-SrRuO3 superlattices

Q. Zhang, S. Thota, F. Guillou, P. Padhan, V. Hardy, A. Wahl, and W. Prellier
Minerals, Metals and Materials Society AIME 420 commonwealth POBox430 Warrendale PA15086 USA

Magnetic structure and magnetocaloric properties of LaSrMnO3SrRuO3 superlattices

S. Thota, Q. Zhang and W. Prellier
European Materials Research Society (E-MRS) Spring Meeting, Strasburg, France, June 6-11, 2010

Comparative study of MgMoO nanopowders by sol-gel synthesis and solid state reaction

A. Kumar, S. Thota, K. N. Rai and J. Kumar
National conference on recent advances in condensed matter physics, Hamirpur, India, May 23-24, 2009

Magnetic behaviour of Manganese oxide nanoparticles obtained by thermal decomposition of sol-gel derived oxalates

S. Thota, B. Prasad and J. Kumar
Particles Based Advanced Materials, Orlando, USA, May 10-13, 2008

Evidence for Ferromagnetic ordering in PLD grown Zn1-xNixO/ZnO bilayer thin films

S. Thota, L. M Kukreja and J. Kumar
52nd International conference on Magnetism and Magnetic Materials (MMM), Tampa, FL, USA, Nov 4-9, 2007

Characteristics of PLD grown Zn1-xNixO/ZnO bi-layer thin-films

S. Thota, L. M. Kukreja and J. Kumar
4th National symposium on Pulsed Laser Ablation (PLD) of thin films and nanostructures materials meet organized by DAE-BRNS at Rajkot Gujarat, India October 3-5, 2007

Evidence for ferromagnetic ordering in nickel doped ZnO diluted magnetic semiconductor at room temperature

S. Thota, O. P. Singh, T. Dutta, and J. Kumar
International conference on MEMS and Semiconductor Nanotechnology, IIT Kharagpur, 20-23 Dec 2005 (India)