INST Faculty Directory

Dr. Suvankar Chakraverty

Associate Professor (Scientist E),

 

Education

♦ Ph.D. in material physics.S.N. Bose National Centre for Basic Sciences (2000-2006)

♦ M.Sc (Physics), University of Calcutta, India (1998-2000)

♦ B.Sc (Physics Hons.) University of Calcutta, India (1995-1998)

Positions Held/Research Experience

♦ Research Scientist (Assistant professor equivalent) The Institute of Physical and Chemical Research (RIKEN),
Wako, Japan.2013

♦ JSPS-GCOE Postdoctoral Fellow at Tohoku University (2008-2010)

♦ Postdoctoral Researcher, Indian Association for the Cultivation of Science, Kolkata, India. (2007-2008)

♦ Visiting Research Dept. of Engineering Sciences, The Ångström Laboratory, Uppsala University,Uppsala, Sweden.
2008(Three months).

Research interests

Designing (and understanding the physical properties) of new materials with integrated functionalities for spin-electronics (spintronics / skyrmionics) devices in the form of thin films and interfaces with atomic scale control and monitoring the growth process using laser molecular beam epitaxy method.  

A. Designing New materials in thin film or interface form using laser molecular beam epitaxy.
B. Structural (surface) characterization using X-ray diffraction and Atomic force microscopy.
C. Magnetic property measurements.
D. Four probe/Hall bar/Transistor device fabrication for transport properties study.

Recent Publications

1.   Electronic structure modification of the KTaO3 single-crystal surface by Ar+ bombardment. N. Wadehra, R. Tomar, S. Halder, M. Sharma, I. Singh, N. Jena, B. Prakash, A. D. Sarkar, C. Bera, A. Venkatesan, and S. Chakraverty*. Phys. Rev. B, 2017, 96, 115423.                                                
2.  Realization of single terminated surface of perovskite oxide single crystals and their band profile: (LaAlO3)0.3(Sr2AlTaO6)0.7, SrTiO3 and KTaO3 case study. R. Tomar, N. Wadehra, V. Budhiraja, B. Prakash, S. Chakraverty.  Appl. Surf. Sci. 2017, 427, 861.
3. Electrical domain writing and nanoscale potential modulation on LaVO3/SrTiO3. M. Balal, S. Sanwlani, N. Wadehra, S. Chakraverty, and G. Sheet*. Appl. Phys. Lett., 2017, 110, 261604.
4.   Biocompatible ferrite nanoparticles for hyperthermia: effect of polydispersity, anisotropy energy and inter-particle interaction. N. Wadehra, R. Gupta, B. Prakash, D. Sharma and S. Chakraverty*. Materials Research Express, 2017, 4(2), 025037.                               

Publications

1.   Electronic structure modification of the KTaO3 single-crystal surface by Ar+ bombardment. N. Wadehra, R. Tomar, S. Halder, M. Sharma, I. Singh, N. Jena, B. Prakash, A. D. Sarkar, C. Bera, A. Venkatesan, and S. Chakraverty*. Phys. Rev. B, 2017, 96, 115423.                                                
2.  Realization of single terminated surface of perovskite oxide single crystals and their band profile: (LaAlO3)0.3(Sr2AlTaO6)0.7, SrTiO3 and KTaO3 case study. R. Tomar, N. Wadehra, V. Budhiraja, B. Prakash, S. Chakraverty.  Appl. Surf. Sci. 2017, 427, 861.
3. Electrical domain writing and nanoscale potential modulation on LaVO3/SrTiO3. M. Balal, S. Sanwlani, N. Wadehra, S. Chakraverty, and G. Sheet*. Appl. Phys. Lett., 2017, 110, 261604.
4.   Biocompatible ferrite nanoparticles for hyperthermia: effect of polydispersity, anisotropy energy and inter-particle interaction. N. Wadehra, R. Gupta, B. Prakash, D. Sharma and S. Chakraverty*. Materials Research Express, 2017, 4(2), 025037.                               
5. Photoinduced demagnetization and insulator-to-metal transition in ferromagnetic insulating BaFeO3 thin films. T. Tsuyama, S. Chakraverty, S. Macke, N. Pontius, C. Schüßler-Langeheine, H. Y. Hwang, Y. Tokura, and H. Wadati. Phys. Rev. Lett., 2016,116, 256402.
6. Graphene/nanoporous-silica heterostructure based hydrophobic antireflective coating. S. De, J. Singh, B. Prakash, S. Chakraverty, K. Ghosh. Materials Today Communications, 2016, 8, 41.
7.   X-ray spectroscopic study of BaFeO3 thin films: An Fe4+ ferromagnetic insulator. T. Tsuyama, T. Matsuda, S. Chakraverty, J. Okamoto, E. Ikenaga, A. Tanaka, T. Mizokawa, H. Y. Hwang, Y. Tokura, and H. Wadati. Phys. Rev. B, 2015, 91, 115101.                                        
8.    Realization of atomically flat steps and terraces like surface of SrTiO3 (001) single crystal by hot water etching and high temperature annealing. B. Prakash, S. Chakraverty. Solid State Communications, 2015, 213, 28.
9.    Realization of single-terminated nano step-and-terrace-like surface of SrTiO3 single crystals. B. Prakash, S. Chakraverty. Current Science (Special Volume: national Research highlight), 2015, 108.
10.  In-plane terahertz response of thin film Sr2RuO4. Y. Takahashi, S. Chakraverty, M. Kawasaki, H. Y. Hwang, and Y. Tokura. Phys. Rev. B., 2014, 98, 165116.
11. Multiple helimagnetic phases and topological Hall effect in epitaxial thin films of pristine and Co-doped SrFeO3. S. Chakraverty, T. Matsuda, H. Wadati, J. Okamoto, Y. Yamasaki, H. Nakao, Y. Murakami, S. Ishiwata, M. Kawasaki, Y. Taguchi, Y. Tokura, and H. Y. Hwang. Phys. Rev. B 88, 220405(R).
12. BaFeO3 cubic single crystalline thin film: A ferromagnetic insulator. S. ChakravertyT. MatsudaN. OgawaH. WadatiE. IkenagaM. KawasakiY. Tokura, and H. Y. Hwang.  Appl. Phys. Lett. 2013, 103, 142416.
13. Atomic scale strucrutre and electronic proeperty of La2FeCrO6/SrTiO3 interface. S. Lv, M. Saito, Z. Wang, C. Chen, S. Chakraverty, M. Kawasaki, and Y.Ikuhara.  J. Appl.  Phys., 2013, 114, 113705.
14. Engineered spin-valve type magnetoresistance in Fe3O4-CoFe2O4 core-shell nanoparticles.  P. A. Kumar, S. Ray, S.  Chakraverty and D. D. SarmaAppl. Phys. Lett., 2013, 103, 102406.
15.  Atomistic geometry and bonding characteristics at the Sr2FeTaO6/SrTiO3interface, S. Lv, M. Saito, Z. Wang, S. Chakraverty, M. Kawasaki, and Y. Ikuhara, Appl. Phys. Lett., 2013, 102, 221602.
16.  Spontaneous B-site order and metallic ferrimagnetism in LaSrVMoO6 grown by pulsed laser deposition, S. Chakraverty, X. Z. Yu, M .Kawasaki, Y.Tokura, and H. Y. Hwang. Appl. Phys. Lett., 2013, 102, 222406.   
17.  Spontaneous atomic ordering and magnetism in epitaxially stabilized double perovskites, A. Ohtomo, S. Chakraverty, H. Mashiko, T. Oshima and M. Kawasaki. 2013, Journal of Materials Research, Volume 28, pp. 689-695. (Invited Feature Review).
18. Spontaneous atomic ordering and magnetism in epitaxially stabilized double perovskites. A. Ohtomo, S. Chakraverty, H. Mashiko, T. Oshima, M. Kawasaki. 2012, Materials Research Society Spring Meeting, MRS Proceedings, Cambridge University Press, 2012, Volume 1454, pp. 3-13 (Reviewed).
19. Epitaxially Stabilized EuMoO3: A New Itinerant Ferromagnet. Y. Kozuka, H. Seki, T. Fujita, S. Chakraverty, K. Yoshimatsu, H. Kumigashira, M. Oshima, M. Bahramy, R. Arita, M. Kawasaki, 2012, Chem. Mater., 24, 3746-3750.
20. Magnetoresistance and electroresistance effect in Fe3O4 nanoparticle system. P. A. Kumar, S. Ray, S. Chakraverty and D. D. Sarma. Journal of Experimental Nanoscience, 2012,
21.   Magnetic properties of Sr2FeTaO6 double perovskite epitaxially grown by pulsed-laser deposition , S. Chakraverty,  M. Saito,  S. Tsukimoto, Y. Ikuhara, A. Ohtomo, and M. Kawasaki. Appl. Phys. Lett., 2011, 99, 223101. 
22. Magnetic and electronic properties of ordered double-perovskite La2VMnO6 thin films. S. Chakraverty, K. Yoshimatsu, Y. Kozuka, H. Kumigashira, M. Oshima, T. Makino,  A.Ohtomo, and  M. Kawasaki.  Phys. Rev. B, 2011, 84, 132411.  
23. Magnetic and electronic properties of La2VMnO6 ordered double perovskite thin films. S.Chakraverty, K. Yoshimatshu, Y. KOzuka, H. Kumigashira, M. Oshima, T. Makino, A. Ohtomo, and M. KawasakiPhys. Rev. B, 2011, 84, 132411.
24. Controlled B-site ordering in Sr2CrReO6 double perovskite films by using pulsed laser interval deposition. S.ChakravertyA. Ohtomo and M. KawasakiAppl. Phys. Lett., 2010, 97, 243107.
25. Epitaxial Structure of (001) and (111)-Oriented Perovskite Ferrate Films Grown by Pulsed-Laser Deposition. S. Chakraverty, A. Ohtomo, M. Okude, K. Ueno and M.  Kawasaki. Crystal Growth & Design, 2010, 10(4), 1725–1729. 
26. Stochastic Modeling of Coercivity- A Measure of Non- equilibrium State. S.Chakraverty, M. Bandyopadhyay. J. Phys.: Condens. Matter., 2007, 19, 216201.
27. Magnetic Coding in a System of Nano-magnetic Particles” S.Chakraverty, A. Frydman, B. Ghosh, S. Kumar. Appl. Phys.Lett., 2006, 88, 042501.
28. Memory in a magnetic nanoparticle system: Polydispersity and interactionEffects.  S. Chakraverty, M. Bandyopadhyay, S. Chatterjee, S. Dattagupta, A.Frydman, S. Sengupta, and P. A. Sreeram. Phys. Rev. B, 2005, 71, 054401.
29. Positron annihilation studies ofsome anomalous features of NiFe2O4 nanocrystals grown in SiO2. S. ChakravertySubarna Mitra, K. Mandal, P. M. G. Nambissan, and S. Chattopadhyay. Phys. Rev. B, 2005, 71, 024115.
30. Magnetic properties of NiFe2O4-SiO2 nanocomposite.” S.Chakraverty, K. Mandal ,S.  Chatterjee and S. Kumar. I.J. Phys.,2004, 78A(2),177-183.

31. Magnetic Properties of NiFe2O4 Nanoparticles in SiO2 Matrix. Suvankar Chakraverty, K. Mandal, S. Mitra, S. Chattopadhyay and S. Kumar.J. J. of Appl. Phys., 2004. 43, 11A, 7782-7787.

32. Size-dependent magnetic properties of Mn0.5Zn0.5Fe2O4 nanoparticles in SiO2 Matrix.” K. MandalS.Chakraverty, S. Pan Mandal, P. Agudo, M. Pal, and D.ChakravortyJ. Appl. Phys., 2002, 92, 501.
Awards :
1. The Swedish Foundation for International Cooperation in Research and Higher education had awarded a three month fellowship to work at Uppsala University (Sweden) with Prof. Per Nordblad on Magnetic Tunnel Junctionand Exchange Bias.

2. Kinkenwakate 2008, Japan, best presentation award.

3. 16th International Workshop on Oxide Electronics Tarragona Spain, best presentation award. 2009.

4. Marubun research grant award 2010, Tokyo Japan.

CONTACT INFORMATION :

Tel: 0172 - 2210075
Email Id : suvankar.chakraverty(at)inst(dot)ac(dot)in

Office Address :

Nanoscale Physics and Device Laboratory

Institute of Nano Science & Technology

Sector - 81, SAS Nagar Mohali

Punjab, India - 160062