Sushil K. Misra

Research

Experimental and Theoretical Condensed Matter Physics

Sushil K. Misra received his Ph. D. degree in Physics from St. Louis University, St. Louis, Missouri, USA in the area of condensed matter physics. He did his post-doctoral work at the University of Toronto. His current research interests are in both theoretical and experimental EPR (electron paramagnetic resonance, also known as ESR, electron spin resonance). His research laboratory includes X-band (~9.5 GHz) and Q-band (~35 GHz) CW (continuous wave) EPR spectrometers, operational in the 4.2 – 1000 K temperature range.

He collaborates actively with researchers at ACERT (Advanced Center for Electron Spin Resonance Technology) at Cornell University, Ithaca, NY, whose director is Professor Jack Freed, as a collaborating faculty member from Canada. Apart from single-crystal and polycrystalline CW EPR research using the 170 and 240 GHz at ACERT, he does simulations for rigorous computations of signals obtained (i) by DQC (double quantum coherence) pulsed EPR to measure distances in membranes, and (ii) by 2D-ELDOR (two dimensional electron double resonance) pulsed EPR to measure distances in biological samples at ambient temperatures.

His other involvement is in optimizing the coil gradients used in the EPR imaging being developed at ACERT. He is also carrying out EPR research in nano-materials and high-Tc superconductors. He has also been involved in electron spin-lattice relaxation studies, with the latest research being on exploitation of amplitude-modulation technique in measuring very short spin-lattice (T1) and electron-electron (T2) relaxation times, in the range of one-tenth nano-second to one micro-second. Nine Ph. D. and ten Master?s students have received their degrees under his supervision

He has served as an external examiner to several Ph. D. theses examinations outside of Concordia University, submitted in Canada, France, and Australia. He serves as a referee to important journals in Physics and Chemistry which publish EPR research, e.g. the Physical Review and Physical Review Letters, Journal of Physics and Chemistry of Solids, Journal of Chemical Physics, Journal of Physical Chemistry, Journal of Magnetism and magnetic Materials, Journal of Magnetic Resonance, Journal of Applied Magnetic Resonance. He has published several review articles in EPR, as well as he has written book chapters in leading research monographs. His research has been continuously supported by NSERC (Natural Sciences and Engineering Research Council of Canada). Of the over 200 papers published by him in refereed journals, over 150 are in the field of EPR.

Recent Publications

• 241. Multifrequency Electron Paramagnetic Resonance: Theory and Applications (In Press, Wiley-VCH), to appear in print in early 2011.


• 240. S.I. Andronenko, A. Leo, I. Stiharu, and S. K. Misra, Aug. 2010. EPR/FMR investigation of Mn-doped SiCN ceramics, Applied Magnetic Resonance (In press)


• 239. S.I. Andronenko, I. Stiharu, D. Menard, C. Lacroix, and S. K. Misra, 2010. EPR/FMR investigation of Fe-doped SiCN ceramics, Appl. Magn. Reson. 38, 385-402.


• 238. A variable temperature EPR study of the manganites (La1/3Sm2/3)2/3SrxBa 0.33xMnO3, (x = 0.0, 0.1, 0.2, 0.33): Small polaron hopping conductivity and Griffiths phase, 2010. S. K. Misra, S. I. Andronenko, S. Asthana, and D. Bahadur, J. Magnetism and Magnetic materials 322, 2902~V2907.


• 237. Sushil K. Misra, Stefan Diehl, Dmitry Tipikin, and Jack H. Freed, 2010. A Multifrequency EPR study of Fe2+ and Mn2+ in a ZnSiF6.6H2O single crystal at liquid-helium temperatures, , J. Magn. Res. 205, 14-22.


• 236. A. Punnoose, K.M. Reddy, J. Hayes, A. Thurber, S. Andronenko, S.K. Misra, 2009. Dopant states and Magnetic Interactions in Sn1-xFexO2: Effect of dopant concentration and preparation, Appl. Magn. Reson. 36, 331-345.


• 235. S. K. Misra, S. I. Andronenko, A. Punnoose, D. Tipikin, and J. H. Freed, 2009. A 236-GHz Fe3+ EPR study of nano-particles of the ferromagnet room-temperature semiconductor Sn1-xFexO2 (x=0.005), Appl. Magn. Reson. 36, 291-295.


• 234. S. K. Misra, P. P. Borbat, and J. H. Freed, 2009. Rigorous calculation of 6-pulse double quantum coherence (DQC) two-dimensional signal in Hilbert space: Distance measurements and orientational correlations, Appl. Magn. Reson. 36, 237-258.


• 233. S. K. Misra, 2009. Use of homotopy technique to achieve better than an order of magnitude computational efficiency in simulation of polycrystalline magnetic resonance spectra. J. Appl. Glob. Res. 2, 38-45.


• 232. S. K. Misra, S. I. Andronenko, S. Rao, S. V. Bhat, C. Van Komen, and A. Punnoose, 2009. Cr3+ electron paramagnetic resonance study of Sn1-xCrxO2 (0.00 x 0.10), J. App. Phys. 105, 07C514-1 07C514-3.


• 231. S. K. Misra, S. I. Andronenko M. H. Engelhard, A. Thurber, K. M. Reddy, and A. Punnoose, 2008. Role of dopant incorporation on the magnetic properties of Ce1-xNixO2 nanoparticles: An electron paramagnetic resonance study, J. App. Phys. 103, 07D122-1-07D122-3.


• 230. S.K. Misra, 2007. Simulation of slow-motion CW EPR spectrum using Stochastic Liouville equation for an electron spin coupled to two nuclei with arbitrary spins: Matrix elements of the Liouville superoperator, J. Mag. Reson. 189, 59-77.


• 229. S.K. Misra, S.I. Andronenko, 2007. A variable temperature X-band EPR study of the Gd3+ ion in a La2Si2O7 crystal characterized by monoclinic symmetry, Appl. Magn. Reson. 32, 377-384.


• 228. S.K. Misra, S.I. Andronenko, K.M. Reddy, J. Hays, A. Thurber, and A. Punnoose, 2007. A variable temperature Fe3+ electron paramagnetic resonance study of Sn1-xFexO2 (0.00 x 0.05), J. App. Phys. 101, 09H120-1 09H120-3


• 227. S.K. Misra and J. R. Pilbrow, 2007. Exchange-mediated spin-lattice relaxation of Fe3+ ions in borate glasses, J. Mag. Reson. 185, 38-41


• 226. S.I. Andronenko, I. Stiharu, and S.K. Misra, 2006. Synthesis and characterization of polyureasilazane derived SiCN ceramics, J. App. Phys. 99, 113907(1-5).


• 225. S.K. Misra, S.I. Andronenko, K.M. Reddy, Hays, and A. Punnoose, 2006, Magnetic Resonance of Co2+ ions in nanoparticles of SnO2 processed at different temperatures, J. App. Phys. 99, 08M106(1-3).


• 224. S. K. Misra, 2006. Microwave Amplitude Modulation Technique to Measure Spin-Lattice (T1) and Spin-Spin (T2) Relaxation Times (Book Chapter Kluwer/Plenum, Elsvier Publishers), vol. 25, pp. 1-30.


• 223. S. K. Misra, Lopez, 2006. Improvement in the Measurement of Spin-Lattice Relaxation Time in Electron Paramagnetic Resonance (Book Chapter Kluwer/Plenum, Elsvier Publishers), vol. 25, pp. 31-82.


• 222. S. K. Misra, 2006. New Methods of Simulation of Mn(II) EPR Spectra: Single Crystals, Polycrystalline and Amorphous (Biological) Materials (Book Chapter Kluwer/Plenum, Elsvier Publishers), vol. 25, pp. 143-178.


• 221. L. Cataldo, C. Dutan, S.K. Misra, S. Loss, H. Grtuzmacher, and M. Geoffroy, 2005. Using the Diphosphanyl Radical as a Potential Spin Label: Effect of Motion on the EPR Spectrum of an R1(R2)P-PR1 Radical, Chem. Eur. J. 11, 3463-3468.


• 220. S.K. Misra, S.I. Andronenko, P. Chand, K.A. Earle, S.V. Paschenko, and J.H. Freed, 2005. A Varaible Temperature EPR Study of Mn2+-doped NH4Cl0.9I0.1 Single Crystal at 170 GHz: Zero-field Split Parameter and its Absolute Sign, J. Mag. Reson. 174, 265-269.


• 219. S. K. Misra, 2005. Application of Microwave Amplitude Modulation Technique to Measure Spin-Lattice (T1) and Spin-Spin (T2) Relaxation Times Accurately Using a Continuous-wave EPR Spectrometer: Solution of Bloch's Equations by a Matrix Technique and Least-Squares Fitting, Appl. Magn. Reson. 28, 55-67.


• 218. S.K. Misra and J. Pilbrow, Spin-lattice relaxation of Fe3+ ions in commercial silicate glasses, 2004. Phys. Rev. B. 69, 212411-4.

Teaching

Fall 2010

• Phys 206 Waves and Modern Physics
• Phys 367 Atomic Physics and Relativity