Gender

Male

Location

Udaipur, Rajasthan

I am...

Physicist

My research field or area of interest innanotechnology

Magnetism and Magnetic Materials

Interest in...

1. Crystal Structure determination of alloys and oxides using X-Ray powder diffraction and Rietveld refinement technique. 2. Crystal and Magnetic Structures determination of alloys and oxides using Neutron diffraction and Rietveld refinement technique. 3. Preparation and characterization of nano- particles of spinel ferrites and ferro-fluids comprising these particles 4. Relaxation behavior of magnetization of nano- particles vis-à-vis conventional Spin Glasses. 5. Spin glass behavior (relaxation and ageing and the phase transition) 6. Study of magnetic structures / behaviors of alloys and compounds

Publication list

In Journals 1. Influence of Co Doping on Structural and Magnetic Properties of Fe2P Sudhish Kumar, Anjali Krishnamurthy, Bipin K. Srivastava Invited Paper in “Latest Trends in Condensed Matter Physics” Solid State Phenomena, 171 (2011) PP. 93-106 ISBN: 978-3-03785-177-7 2. Room temperature ferromagnetism in pure and Co- and Fe-doped CeO2 dilute magnetic oxide: Effect of oxygen vacancies and cation valence R.K. Singhal, P. Kumari, Sudhish Kumar, S.N. Dolia, Y.T. Xing, M. Alzamora, U.P. Deshpande, T. Shripathi, Elisa Saitovitch Journal of Physics D: Applied Physics 44 (2011) 165002 (6pp) 3. Investigating the mechanism of ferromagnetic exchange interaction in non-doped CeO2 with regard to defects and electronic structure R.K. Singhal, Sudhish Kumar and Y.T. Xing Communicated to Materials Chemistry Physics 4. Swift Heavy Ion Irradiation induced modifications in magnetic and dielectric properties of Mn-Ca ferrite S. N. Dolia, P. K Sharma, M. S Dhawan, Sudhish Kumar, Arun S Prasad, A. Samariya, S P Pareek, R K Singhal, K Asokan, Y. T. Xing, M Alzamora and E. Saitovitch Applied Surface Science (Accepted) In Press 5. Evidence of defect-induced ferromagnetism and its “switch” action in pristine bulk TiO2 R.K. Singhal, Sudhish Kumar, P. Kumari, Y.T. Xing, E. Saitovitch Applied Physics Letters 98 (2011) pp.092510 6. Study of electronic structure and magnetization correlations in hydrogenated and vacuum annealed Ni doped ZnO R.K. Singhal, S.C. Sharma, P. Kumari, Sudhish Kumar, A. Samariya, Y.T. Xing, U.P. Deshpande, T. Shripathi, Elisa Saitovitch Journal of Applied Physics 109 (2011) pp. 063907 7. Magnetization enhancement in nanocrystalline Co0.4Zn0.6Fe2O4 by 200MeV Ag+15 ion irradiation S.N. Dolia, M.S. Dhawan, Arun S. Prasad, S. Kumar, Arvind Samariya, R.K. Singhal and Ravi Kumar Radiation Effects & Defects in Solids, (2011) In Press On line available at http://dx.doi.org/10.1080/10420150.2011.553232 8. Electronic structure and magnetization correlations in Ni doped ZnO R.K. Singhal, Sudhish Kumar, Y.T. Xing, U.P. Deshpande, T. Shripathi, S.N. Dolia, E. Saitovitch Materials Letters 65 (2011) 1485–1487 9. Role of electronic structure and oxygen defects in driving ferromagnetism in nondoped bulk CeO2 R.K. Singhal, P. Kumari, A. Samariya, Sudhish Kumar, S.C. Sharma, Y.T. Xing, and Elisa. B. Saitovitch Applied Physics Letters 97 (2010) pp. 172503 10. A close correlation between induced ferromagnetism and oxygen deficiency in Fe doped In2O3 R.K. Singhal, A. Samariya, Sudhish Kumar, S.C. Sharma, Y.T. Xing, U.P Deshpande, T. Shripathi and E. Saitovitch Applied Surface Science 257 (2010) pp. 1053-1057 11. Effect of hydrogenation vs. re-heating on intrinsic magnetization of Co doped In2O3 A. Samariya, R.K. Singhal, Sudhish Kumar, Y.T. Xing, S.C. Sharma, P. Kumari, D.C. Jain, S.N. Dolia, U.P. Deshpande, T. Shripathi and E. Saitovitch Applied Surface Science 257 (2010) pp. 585-590 12. Switch ‘on’ and ‘off’ ferromagnetic ordering vis à vis inducing and removing of oxygen vacancies and carriers in doped ZnO: A magnetization and electronic structure study R. K. Singhal, Arvind Samariya, S. Kumar, Y. T. Xing, U. P. Deshpande, T. Shripathi, S. N. Dolia, Elisa B. Saitovitch Phys. Status Solidi A 207, No. 10, (2010) pp. 2373–2386 DOI 10.1002/pssa.200925637 13. Influence of ageing on H-induced ferromagnetism in Zn1-xMxO (M=Co, Fe, Mn) R.K. Singhal, A. Samariya, Sudhish Kumar, Y T Xing, Elisa Saitovitch, Materials Letters 64 (2010) pp. 1846-1849 14. Defect-Induced Reversible Ferromagnetism in Fe doped ZnO Semiconductor: an Electronic Structure and Magnetization Study Arvind Samariya, R. K. Singhal, Sudhish Kumar, Y.T. Xing, Mariella Alzamora, S.N. Dolia, U.P. Deshpande, T. Shripathi and Elisa B. Saitovitch Materials Chemistry and Physics 123 (2010) pp. 678-684 15. Study of defect-induced ferromagnetism in hydrogenated anatase TiO2:Co R.K. Singhal, Arvind Samariya, Sudhish Kumar, Y.T. Xing, D.C. Jain, S.N. Dolia, U.P. Deshpande, T. Shripathi, Elisa B. Saitovitch Journal of Applied Physics 107 (2010) 113916 16. Neutron diffraction studies on 3d metal substituted Fe2P based alloys Sudhish Kumar Recent Trends in Radiation Physics Research, 2010, PP 65-69 Proceedings of 18th National Symposium on Radiation Physics (NSRP-18) ISBN: 978-81-7906-227-2 17. Defect-induced reversible ferromagnetism in hydrogenated ZnO:Co R. K. Singhal, A. Samariya, Sudhish Kumar, Y. T. Xing, U. P. Deshpande, T. Shripathi and E. Baggio-Saitovitch Journal of Magnetism and Magnetic Materials Volume 322, Issue 15, August 2010, Pages 2187-2190 18. On the longevity of H-mediated ferromagnetism in Co doped TiO2: A study of electronic and magnetic interplay R.K. Singhal, A. Samariya, Sudhish Kumar, Y.T. Xing, D.C. Jain, U.P. Deshpande, T. Shripathi, Elisa Saitovitch and C.T. Chen Solid State Communications Volume 150, Issues 25-26, July 2010, Pages 1154-1157 19. Electronic and magnetic properties of Co-doped ZnO diluted magnetic semiconductor R.K. Singhal, Arvind Samariya, Y.T. Xing, Sudhish Kumar, S.N. Dolia, U.P. Deshpande, T. Shripathi and Elisa B. Saitovitch Journal of Alloys and Compounds Volume 496, Issues 1-2, 30 April 2010, Pages 324-330 20. Study of Room-Temperature Ferromagnetism for Cobalt and Manganese doped ZnO Diluted Magnetic Semiconductor R K Singhal, Arvind Samariya, S N Dolia, Sudhish Kumar, T Shripathi, Elisa Saitovitch, Journal of Physics: Conference Series 200 (2010) 062029 21. Room temperature ferromagnetism in Mn doped dilute ZnO semiconductor; an electronic structure study R.K. Singhal, M. Dhawan, S.Kumar, S.N.Dolia, Y.T.Xing, Elisa Saitovitch Physica B: Physics of Condensed Matter 404 (2009 3275-3280 22. Room temperature ferromagnetism in Mn-doped dilute ZnO semiconductor: An electronic structure study using X-ray photoemission R.K. Singhal, M.S. Dhawan, S.K. Gaur, S.N. Dolia, Sudhish Kumar, T. Shripathi, U.P. Deshpande, Y.T. Xing, Elisa Saitovitch and K.B. Garg Journal of Alloys and Compounds 477 (2009) 379–385 23. Room temperature ferromagnetism in Mn doped ZnO semiconductor, R K Singhal, S N Dolia, M S Dhawan, Sudhish Kumar, Y Xing, Elisa Saitovitch and K B Garg International Journal of Modern Physics B 23 (No. 08) (2009) 2029 – 2040 24. Study of ferromagnetism in Mn doped ZnO dilute semiconductor system R.K. Singhal, M.S. Dhawan, S.K. Gaur, S.N. Dolia, Sudhish Kumar, T. Shripathi, U.P. Deshpande, Y.T. Xing, Elisa Saitovitch and K.B. Garg Journal of Physics: Conference Series 153 (2009) 012065 25. Magnetism of (Fe0.93Ni0.07)2P studied using 57Fe Mössbauer Spectroscopy, Sudhish Kumar, Anjali Krishnamurthy and Bipin K. Srivastava, Hyperfine Interactions 184 (2008) 155-159 26. On nature of magnetism in the ferromagnetic alloys (Fe1-xCox)2P Sudhish Kumar, Anjali Krishnamurthy and Bipin K. Srivastava, Journal of Physics D: Applied Physics 41 (2008) 055001 (5pp) 27. Structural and magnetic properties of (Fe0.93Ni0.07)2P Sudhish Kumar, Anjali Krishnamurthy, Bipin K Srivastava and S. K. Paranjpe, Journal of Physics: Condensed Matter 19 (2007) 196217 (12pp) 28. Synthesis and Characterization of Charge –Transfer Complexes of Π-acceptor TCNQ with various Phenols, Neelu Chouhan, M.L. Kalra, Sudhish Kumar, Y.N. Singh and Suresh C. Ameta, Molecular Crystals and Liquid Crystals 469 (2007) 99-110 29. Neutron diffraction study on the magnetic structure of (Fe0.70Co0.30)2P, S.K. Jain, Sudhish Kumar, P.S.R. Krishna, A.B.Shinde, Anjali Krishnamurthy and Bipin K. Srivastava, Journal of Alloys and Compounds 439 (2007) 13-17 30. Neutron Diffraction study on the magnetic structure of (Fe0.90Cr0.03Ni0.07)2P, Sudhish Kumar, Anjali Krishnamurthy, Bipin K Srivastava and S. K. Paranjpe, Journal of Alloys and Compounds 426 (2006) 51-56 31. Superparamagnetic behaviour of nano-particles of Ni-Cu ferrite S. N. Dolia, Subhash Chander, M. P. Sharma and Sudhish Kumar, Indian Journal of Pure and Applied Physics 44 (2006) 169-172 32. Magnetization and Neutron diffraction studies on FeCrP Sudhish Kumar, Anjali Krishnamurthy, Bipin K Srivastava, A. Das and S. K. Paranjpe, Pramana_ Journal of Physics 63 (No. 2) (2004) 199-205. 33. Magnetic behavior of nano-particles of Fe2.9Zn0.1O4 Subhash Chander, Sudhish Kumar, Anjali Krishnamurthy, Bipin K. Srivastava and V.K. Aswal, Pramana_ Journal of Physics 61 (No. 3) (2003) 617-624. 34. Magnetic behavior of alloys in the series (Fe1-xCox)2P Sudhish Kumar, Subhash Chander, Anjali Krishnamurthy and Bipin K. Srivastava, Journal of Magnetism and Magnetic Materials 237(2) (2001) 135-142 35. Magnetic structure of (Fe0.93Ni0.07)2P Sudhish Kumar, S. K. Paranjpe, Bipin K Srivastava and Anjali Krishnamurthy, Physica Status Solidi (a) 175 (1999) 693 - 697 36. Magnetic structure of (Fe0.97Cr0.03)2P Sudhish Kumar, S. K. Paranjpe, Bipin K Srivastava, Anjali Krishnamurthy and V.C. Sahni, Pramana_ Journal of Physics 52 (1999) 111-120 Invited Talks in Conferences 1. Invited talk “Application of Rietveld Method to the Structural Characteristics of some Bulk and Nanocrystalline Materials” Sudhish Kumar, S. N. Dolia and R. K. Singhal OPTICS'11: A Conference on Light. Organized by the Dept. of Physics, NIT Calicut, during May 23 to 25, 2011 at National Institute of Technology Calicut, 2. Invited Talk “Rietveld refinement of diffraction patterns of some bulk and nanocrystalline samples” Sudhish Kumar, S. N. Dolia and R. K. Singhal National conference and workshop on recent advances in modern communication systems and nanotechnology (NCMCN-2011) Organized by Centre for Converging Technologies and Department of Science and Technology, Govt. of Rajasthan at the University of Rajasthan, Jaipur. During January 6-8, 2011. IT-11, Page No. 13. Abstract Book NCMCN-2011 3. Invited talk “Neutron diffraction studies on 3d metal substituted Fe2P based alloys” Sudhish Kumar National Symposium on Radiation Physics (NSRP-18) Organized by Department of Physics and ISRP at M.L. Sukhadia University, Udaipur During November 19-21, 2009.

Researchgroup, Institute, University, School, Company name

Department of Physics

Researchgroup, Institute, Company, University, School webpage

https://www.physicsmlsu.org

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