Selected Publications:

    Intergranular Magnetoresistance in Sr2FeMoO6 from a Magnetic Tunnel Barrier Mechanism across Grain Boundaries
D. D. Sarma, Sugata Ray, K. Tanaka, M. Kobayashi, A. Fujimori, P.Sanyal, H.R. Krishnamurthy and C. Dasgupta;
Phys. Rev. Lett. 98, 157205 (2007).

   Nature of “disorder” in the ordered double perovskite Sr2FeMoO6
C. Meneghini, Sugata Ray, F. Liscio, F. Bardelli, S. Mobilio, and D. D. Sarma;
Phys. Rev. Lett. 103, 046403 (2009).

    Atomic scale chemical fluctuation in LaSrVMoO6: A proposed halfmetallic antiferromagnet
Somnath Jana, Vijay Singh, S. D. Kaushik, Carlo Meneghini, Prabir Pal, Ronny Knut, Olof Karis, Indra Dasgupta, Vasudeva Siruguri, and Sugata Ray;
Phys. Rev. B: Rapid Comm. 82, 180407(R) (2010).

   Defect induced magnetism: an affirming test of dilute magnetism in Fe-doped hexagonal BaTiO3 single crystals
Tanushree Chakraborty, Sugata Ray, and Mitsuru Itoh;
Phys. Rev. B 83, 144407 (2011).

   Glass-like ordering and spatial inhomogeneity of magnetic structure in Ba3FeRu2O9: The role of Fe/Ru-site disorder
Srimanta Middey, Sugata Ray, K. Mukherjee, P. L. Paulose, E. V. Sampathkumaran, C. Meneghini, S. D. Kaushik, V. Siruguri, Kirill A. Kovnir, and D. D. Sarma;
Phys. Rev. B 83, 144419 (2011).

    LaSrVMoO6: A case study for A-site covalency-driven local cationic order in double perovskites
Somnath Jana, Vijay Singh, Abhishek Nag, Carlo Meneghini, Indra Dasgupta, Giuliana Aquilanti, and Sugata Ray;
Phys. Rev. B 86, 014203 (2012)

   Evidence of oxygen-vacancy-induced ferromagnetic order in single crystal Mn-doped SrTiO3
Srimanta Middey, Carlo Meneghini, and Sugata Ray;
Appl. Phys. Lett. 101, 042406 (2012).

   Signature of an antiferromagnetic metallic ground state in heavily electron doped Sr2FeMoO6
Somnath Jana, Carlo Meneghini, Prabuddha Sanyal, Soumyajit Sarkar, Tanusri Saha-Dasgupta, Olof Karis, and Sugata Ray;
Phys. Rev. B 86, 054433 (2012)

   Microscopic distribution of metal dopants and anion vacancies in Fe-doped BaTiO3-d single crystals
Tanushree Chakraborty, Carlo Meneghini, Giuliana Aquilanti and Sugata Ray;
J. Phys.: Condens. Matter 25, 236002 (2013).

   Structural, electrical, and magnetic properties of Ba0.9Ca0.1Ti0.97Fe0.03O3 and the effect of oxygen vacancies
Tanushree Chakraborty, Carlo Meneghini, Giuliana Aquilanti, and Sugata Ray;
J. Appl. Phys. 114, 223911 (2013).

   Engineered spin-valve type magnetoresistance in Fe3O4-CoFe2O4 coreshell nanoparticles
P. Anil Kumar, Sugata Ray, S. Chakraverty, and D. D. Sarma;
Appl. Phys. Lett. 103, 102406 (2013).

   Re-entrant superspin glass phase in La0.82Ca0.18MnO3 ferromagnetic insulator
P. Anil Kumar, R. Mathieu, P. Nordblad, Sugata Ray, Olof Karis, Gabriella Andersson, D. D. Sarma;
Phys. Rev. X (in press).