Singh, Jitendra Pal Gautam, Sanjeev Srivastava, R. C. Asokan, K. Kanjilal, D. Chae, Keun Hwa 2024-01-20T06:02:41Z 2024-01-20T06:02:41Z 2021-09-05 2015-10 0749-6036 https://pubs.kist.re.kr/handle/201004/124956 Present work investigates the crossover from paramagnetism to superparamagnetism as a function of crystallite size in zinc ferrite nanoparticles using near edge X-ray absorption spectroscopy. Synthesized paramagnetic and superparamagnetic nanoparticles exhibit presence of Fe2+ and Fe3+ ions with dominant concentration of Fe3+ ions. Fe L- and O K-edges spectra of paramagnetic nanoparticles consist of more intense spectral features compared to that of superparamagnetic nanoparticles. This reflects enhanced t(2g) and e(g) symmetry states of Fe-O hybridized states in paramagnetic nanoparticles induced by increased degree of crystallization. (C) 2015 Elsevier Ltd. All rights reserved. English ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD X-RAY-ABSORPTION OXYGEN K-EDGE CATION DISTRIBUTION MAGNETIC-PROPERTIES DIELECTRIC-PROPERTIES NEUTRON-DIFFRACTION SPINEL-GRAPHENE TEMPERATURE MOSSBAUER ZNFE2O4 Crystallite size induced crossover from paramagnetism to superparamagnetism in zinc ferrite nanoparticles Article 10.1016/j.spmi.2015.07.062 1 SUPERLATTICES AND MICROSTRUCTURES, v.86, pp.390 - 394 SUPERLATTICES AND MICROSTRUCTURES 86 390 394 scie scopus 000362603100046 2-s2.0-84939484011 Physics, Condensed Matter Physics Article X-RAY-ABSORPTION OXYGEN K-EDGE CATION DISTRIBUTION MAGNETIC-PROPERTIES DIELECTRIC-PROPERTIES NEUTRON-DIFFRACTION SPINEL-GRAPHENE TEMPERATURE MOSSBAUER ZNFE2O4 Nanoparticles Magnetic materials Spectroscopy