NISER

Ph.D. in 2006 from University of Duisburg-Essen, Duisburg, Germany
• Guest scientist: (Jan 2010-Jun 2010) Forschungszentrum Juelich, Germany
• Postdoctoral Researcher: (2009) Physics department of Princeton University, NJ, USA
• Postdoctoral Researcher: (2006-2008) University of Duisburg-Essen, Duisburg, Germany
 

Our group focuses on the studies of the following research areas

• magnetic multilayers (inter-layer coupling effects)
• magnetic nanoparticles (interparticle interaction effects)
• superferromagnetism
• multiferroics
• proximity effect in superconductor/ferromagnetic multilayers
• magnetic domains and domain wal dynamics    

1.    Intra- and interparticle interaction in a dense frozen ferrofluid

S. Bedanta, S. Sahoo, X. Chen, W. Kleemann, D. Sudfeld, K. Wojczykowski, and A. Hütten

Phase Trans. 78, 121 (2005)- 5 citations

2.   Collective magnetic states of ferromagnetic nanoparticles in the superspin limit

S. Bedanta, X. Chen, S. Sahoo, W. Kleemann, E. Kentzinger, P. Nordblad, S. Cardoso, and P.P. Freitas

Phys. Stat. Sol. (c) 1, 3288 (2004)- 6 citations

3. Superferromagnetic domain state of a discontinuous metal insulator multilayer

S. Bedanta, O. Petracic, E. Kentzinger, W. Kleemann, U. Rücker, A. Paul, Th. Brückel, S. Cardoso, and P. P. Freitas

Phys. Rev. B. 72, 024419 (2005)- 29 citations

4.   A sample holder design for high temperature measurements in superconducting quantum interference device magnetometers

S. Bedanta, O. Petracic, M. Aderholz, and W. Kleemann

Rev. Sci. Instrum. 76, 083910 (2005)- 7 citations

Virt. J. Appl. Supercond. 9, 4 (2005)

5.   Superparamagnetism vs. superspin glass behavior in dilute magnetic nanoparticle systems

X. Chen, S. Bedanta, O. Petracic, W. Kleemann, S. Sahoo, S. Cardoso, and P. P. Freitas

Phys. Rev. B 72, 214436 (2005)- 75 citations

6.   Collective states of interacting ferromagnetic nanoparticles   

O. Petracic, X. Chen, S. Bedanta, W. Kleemann, S. Sahoo, S. Cardoso, and P. P. Freitas   

J. Magn. Magn. Mater. 300, 192 (2006)- 107 citations

7.   Modulated magnetization depth profile in dipolarly coupled magnetic multilayers

S. Bedanta, E. Kentzinger, O. Petracic, W. Kleemann, U. Rücker, A. Paul, Th. Brückel, S. Cardoso, and P. P. Freitas

Phys. Rev. B. 74, 054426 (2006)- 15 citations

8.   The origin of ferromagnetism in 57Fe ion-implanted semiconducting 6H-polytype silicon carbide

F. Stromberg, W. Keune, X. Chen, S. Bedanta, H. Reuther, and A. Mücklich

J. Phys. Condens. Matter. 18, 9881 (2006)- 41 citations

9.   Polarized neutron reflectivity studies on granular C80Fe20/Al2O3 multilayers

S. Bedanta, E. Kentzinger, O. Petracic, W. Kleemann, U. Rücker, A. Paul, Th. Brückel, S. Cardoso, and P. P. Freitas

Physica B 397, 65 (2007).- 3 citations

10. Overcoming dipolar disorder in dense CoFe nanoparticle ensembles –superferromagnetism

S. Bedanta, T. Eimüller, W. Kleemann, J. Rhensius, F. Stromberg, E. Amaladass, S. Cardoso, and P. P. Freitas,

Phys. Rev. Lett. 98, 176601 (2007)- 96 citations

Also selected for Virtual Journal of Nanoscale Science & Technology -- May 7, 2007

11. Crystal structures and its correlation to intrinsic and extrinsic magnetic properties of epitaxial hard magnetic Pr-Co films

A. K. Patra, V. Neu, S. Fähler, R. Groetzschel, S. Bedanta, W. Kleemann and L. Schultz

Phys. Rev. B 75, 184417 (2007)- 14 citations

12. "(Sr,Mn)TiO3 â€“ a magnetoelectric multiglass"

      V. V. Shvartsman, S. Bedanta, P. Borisov, W. Kleemann, A. Tkach, and P. Vilarinho

      Phys. Rev. Lett. 101, 165704 (2008)- 84 citations

13. "(Sr,Mn)TiO3 â€“ a magnetoelectrically coupled multiglass"

      W. Kleemann, V. V. Shvartsman, S. Bedanta, P. Borisov, A. Tkach, and P. Vilarinho

      J. Phys. Condens. Matter. 20, 434216 (2008)- 25 citations

14. Magnetoelectricity in multiferroically composed multilayers and multiglasses

 W. Kleemann, P. Borisov, V.V. Shvartsman, S. Bedanta, A. Tkach, and M. Vilarinho

      J. Magn. Magn. Mater. 321, 1785 (2009)- 5 citations

15. Transition from Non-Percolated Superferromagnetism to Percolated Ferromagnetism in Granular Metal-Insulator Multilayers

      S. Bedanta, O. Petracic, F. Strromberg, W. Kleemann, S. Cardoso, and P. P. Freitas

      AIP Conference Proceedings 1063, 119 (2008)

16. FeSi diffusion-barriers in Fe/FeSi/Si/FeSi/Fe multilayers and oscillatory antiferromagnetic exchange coupling

      F. Stromberg, S. Bedanta, C. Antoniak, W. Keune, and H. Wende

      J. Phys. Condens. Matter. 20, 425205 (2008)- 6 citations

17. Dynamic behavior of a superferromagnetic metal-insulator multilayer observed by magneto-optic Kerr microscopy

      S Bedanta, J Rhensius, W Kleemann, P. Parashar, S Cardoso, and P P Freitas

      J. Appl. Phys. 105, 07C306 (2009)- 8 citations

18. Multiglass order and magnetoelectricity in Mn2+ doped incipient ferroelectrics

     W. Kleemann, S. Bedanta, P. Borisov, V. V. Shvartsman, S. Miga, J. Dec, A. Tkach, and P. M. Vilarinho

     Eur. Phys. J. B 71, 407 (2009)- 32 citations

19. Spin cluster glass and magnetoelectricity in Mn-doped KTaO3

      V. V. Shvartsman, S. Bedanta, P. Borisov, W. Kleemann, A. Tkach, and P. M. Vilarinho

J. Appl. Phys. 107, 103926 (2010)- 8 citations

20. Multiferroic and Magnetoelectric Materials-Novel Developments and Perspectives

      W. Kleemann, P. Borisov, S. Bedanta, V V Shvartsman

      IEEE Trans. On Ultraso. Ferroelectr. And Freq. Control 57, 2228 (2010)- 5 citations

21. Single-particle blocking and collective magnetic states in discontinuous CoFe/Al2O3 multilayers

      S. Bedanta, O. Petracic, X. Chen, J. Rhensius, S. Bedanta, E. Kentzinger, U. Rücker, Th. Brückel, A. Doran, A. Scholl, S. Cardoso, P. P. Freitas, and W. Kleemann,

      J. Phys. D Appl. Phys. 43, 474002 (2010)- 10 citations

22. Magnetic Anomaly and Dielectric Tunability of (Sr,Mn)TiO3 Thin Films

      A. Tkach, O. Okhay, A. Wu, P. M. Vilarinho, S. Bedanta, V. V. Shvartsman, and P. Borisov, P

      FERROELECTRICS  426,  274-281  (2012)

23. S. Bedanta and W. Kleemann, AIP Conf. Proc. 1447, 65 (2012).

24. W. Kleemann, P. Borisov, V. V. Shvartsman, and S. Bedanta, EPJ Web of Conf. 29, 00046 (2012) -2 citations

25.  Comment on "The Origin of Magnetism in Mn-Doped SrTiO 3"-              Alexander     Tkach, Paula M. Vilarinho, Wolfgang Kleemann, Vladimir V. Shvartsman, Pavel Borisov and Subhankar Bedanta, Adv. Funct. Mater. 23, 2229 (2012)- Citations 3

26. S. Bedanta, N. Chowdhury, and S. Sing, AIP Conf. Proc. 1461, 98 (2012) -1 citations

27. Study of magnetization reversal processes in a thin Co film

N.  Chowdhury, S. Bedanta* and S. Babu, J. Magn. Magn. Mater. 336, 20 (2013) -5 citations

28. Evidence of the spin glass state in (Bi1.88Fe0.12)(Fe1.42Te0.58)O6.87pyrochlore

  S. Babu, S. Bedanta*, and M. Valant, Solid State Commun. 158, 51 (2013)

29. Spacer layer and temperature driven magnetic properties in multilayer structured FeTaC thin films
A. K. Singh, S. Mallik, S. Bedanta, A. Perumal
Journal of Physics D: Applied Physics 46 (44), 445005 (2013)

30. Coexistence of magnetic order and spin-glass like phase in the pyrochlore antierromagnet Na{3}Co(CO{3}){2}Cl

Z. Fu, Y. Zheng, Y. Xiao, S. Bedanta, A. Senyshyn, G. G Simeoni, Y. Su, U. Ruecker, P. Koegerler, and T. Brueckel, Phys. Rev. B 87, 214406 (2013)- 

31. Controlling the anisotropy and domain structure with oblique deposition and substrate rotation

       N. Chowdhury and S. Bedanta, AIP Advances 4, 027104 (2014)

32.  Interplay of uniaxial and cubic anisotropy in epitaxial Fe thin films on MgO (001) substrate

      Srijani Mallik, Niru Chowdhury and Subhankar Bedanta

      AIP Advances 4, 097118 (2014)

33. Magnetic domain imaging in L10 ordered FePt thin films with in-plane uniaxial magnetic anisotropy

      Sougata Mallick, Subhankar Bedanta, Takeshi Seki and Koki Takanashi

      J. Appl. Phys. 116, 133904 (2014)

34. Size and Shape dependence study of Magnetization reversal in Magnetic Antidot Lattice arrays

      Sougata Mallick and Subhankar Bedanta

      J. Magn. Magn. Mater. 382, 158 (2015)

35. Controlling the size and relaxation dynamics of superferromagnetic domains

      N. Chowdhury, S. Bedanta, S. Sing, and W. Kleemann

      J. Appl. Phys. 117, 153907 (2015)

36. Effect of substrate rotation on domain structure and magnetic relaxation in magnetic antidot lattice arrays

      Sougata Mallick, Srijani Mallik and Subhankar Bedanta

      J. Appl. Phys 118, 083904 (2015)

37. Superferromagnetism in dipolarly coupled L10 FePt nanodots with perpendicular magnetization

S. Bedanta, T. Seki, H. Iwama, T. Shima, and K. Takanash 

Applied Physics Letters 107, 152410 (2015)

Invited Review article:

38. Invited review article on the magnetism of nanoparticles "Supermagnetism"

      S. Bedanta and W. Kleemann

J. Phys. D Appl. Phys. 42, 013001 (2009)- 447 citations

39. Magnetic Nanoparticles: A Subject for Both Fundamental Research and Applications

S. Bedanta, A. Barman, W. Kleemann, O. Petracic, and T. Seki

Journal of Nanomaterials. Volume 2013 (2013), Article ID 952540- 3 citations

40. Invited book chapter in Handbook of Magnetism (Elsevier) "Supermagnetism"

S. Bedanta, O. Petracic, W. Kleemann, - Volume 23, Page 1 (2015)

Our broad research area is to study the properties of magnetic materials in bulk and low dimension.

    Our group focuses on the following research areas......

•     Magnetic Multilayers (inter-layer coupling effects)
•     Epitaxial Magnetic Thin Film
•     Proximity effect in Superconductor/Ferromagnet 
•     Superferromagnetism
•     Patterned Magnetic Nanostructures (magnetic dots, anti-dots, spin ice systems)
•     Magnetic Nanoparticles (interparticle interaction effects)
•     Material Synthesis
•     Multiferroics

           1st Semester Laboratory Course

            2nd Semester Laboratory Course

             7th Semester Laboratory Course

             8th Semester Laboratory Course

            9th Semester Laboratory Course

            Mathematical methods - I

            Mechanics and thermodynamics (1st Semester)