Crystallite size induced crossover from paramagnetism to superparamagnetism in zinc ferrite nanoparticles

Title
Crystallite size induced crossover from paramagnetism to superparamagnetism in zinc ferrite nanoparticles
Authors
Jitendra Pal SinghSanjeev GautamR.C. SrivastavaK. AsokanD. Kanjilal채근화
Keywords
Nanoparticles; Magnetic materials; Spectroscopy
Issue Date
2015-10
Publisher
Superlattices and microstructures
Citation
VOL 86, 390-394
Abstract
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 t2g and eg symmetry states of Fe–O hybridized states in paramagnetic nanoparticles induced by increased degree of crystallization.
URI
http://pubs.kist.re.kr/handle/201004/50678
ISSN
07496036
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE