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EPR of Mn2+ in [Co(H2O)6] PtCl6 single crystals: Estimation of Co2+ spin-lattice relaxation time
Institution:1. Department of Physics, Sasi Institute of Technology & Engineering, Tadepalligudem 534101, India;2. Department of Physics, Krishna University, Machilipatnam 521001, India;3. Advanced Analytical Laboratory, Andhra University, Visakhapatnam 530003, India;4. Department of Physics, Dr. N.G. P. Institute of Technology, Coimbatore 643048, India;5. Department of Physics, Akkineni Nageswara Rao college, Gudivada 521301, India;6. Department of Physics, Andhra University, Visakhapatnam 530003, India;1. Frontier Institute of Science and Technology (FIST), Xi’an Jiaotong University Shenzhen Research School, State Key Laboratory of Mechanical Behavior, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Mater, Xi’an Key Laboratory of Sustainable Energy and Materials Chemistry and School of Science, Xi’an Jiaotong University 99 Yanxiang Road, Xi’an, Shaanxi 710054 (P.R. China);2. Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK;1. Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 391-1195, Japan;2. Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 391-1195, Japan;3. Department of Chemistry and Applied Chemistry, Saga University, 1-Honjo, Saga 840-8502, Japan;4. Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden 01062, Germany;1. Physical Chemistry Laboratory for Mineral Materials and Their Applications, National Center for Research in Materials Sciences, Borj Cedria Technopark, Soliman 8027, Tunisia;2. Laboratory of Useful Materials Valuation, National Center for Research in Materials Sciences, Borj Cedria Technopark, BP 73, Soliman 8027, Tunisia
Abstract:EPR of Mn2+ in single crystals of Co(H2O)6]PtCl6 has been studied from room temperature to 77 K at ∼ 9.35 GHz. Mn2+ has been found to substitute for Co2+ exhibiting a unique magnetic complex. The observation of resolved Mn2+ spectra has been interpreted in terms of a random modulation of the interaction between the Mn2+ and Co2+ ions by the rapid spin-lattice relaxation of Co2+ ions. It has been found that the effective spin-relaxation time T1αTn where n = 1.8 for 105 < T< 293 K.
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