Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 409, Issue -, Pages 104-110Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2016.02.097
Keywords
Yttrium iron garnet; Size effect; Magnetic diameter; Dead layer thickness; Mossbauer spectroscopy
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This study is focused on particle size dependence of structural and magnetic properties in yttrium iron garnet (Y3Fe5O12) nanoparticles. A series of YIG samples with different particle size were produced by varying the annealing temperatures. The X-ray analysis revealed an inverse correlation between lattice parameter and the crystallite size. The normal distribution is used for fitting the particles size distribution which is extracted from scanning electron micrographs. Also, by using the results of vibrating sample magnetometer, the magnetic diameter was calculated based on Langevin model in order to investigate the variation of dead layer thickness. Furthermore, the observed line broadening in Mossbauer spectra confirmed the increase of non-magnetic thickness due to the reduction of particle size. (C) 2016 Elsevier B.V. All rights reserved.
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