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Title: The cation inversion and magnetization in nanopowder zinc ferrite obtained by soft mechanochemical processing

Graphical abstract: - Highlights: • Nano powder of ZnFe{sub 2}O{sub 4} prepared by a soft mechanochemical route after 18 h milling. • Phase formation controlled by XRD, Raman spectroscopy and magnetic measurements. • Size, strain and cation inversion degree determined by Rietveld refinement. • We were able to estimate the degree of inversion at most 0.348 and 0.4. • Obtained extremely high values of saturation magnetizations at T = 4.5 K. - Abstract: Two zinc ferrite nanoparticle materials were prepared by the same method – soft mechanochemical synthesis, but starting from different powder mixtures: (1) Zn(OH){sub 2}/α-Fe{sub 2}O{sub 3} and (2) Zn(OH){sub 2}/Fe(OH){sub 3}. In both cases a single phase system was obtained after 18 h of milling. The progress of the synthesis was controlled by X-ray diffractometry (XRD), Raman spectroscopy, TEM and magnetic measurements. Analysis of the XRD patterns by Rietveld refinement allowed determination of the cation inversion degree for both obtained single phase ZnFe{sub 2}O{sub 4} samples. The sample obtained from mixture (1) has the cation inversion degree 0.3482 and the sample obtained from mixture (2) 0.400. Magnetization measurements were confirmed that the degrees of the inversion were well estimated. Comparison with published data shows that used methodmore » of synthesis gives nano powder samples with extremely high values of saturation magnetizations: sample (1) 78.3 emu g{sup −1} and sample (2) 91.5 emu g{sup −1} at T = 4.5 K.« less
Authors:
 [1] ;  [1] ;  [2] ;  [3] ; ; ;  [1]
  1. Institute of Physics, University of Belgrade, Pregrevica 118, Zemun, Belgrade (Serbia)
  2. Institute for Multidisciplinary Research, University of Belgrade, Belgrade (Serbia)
  3. Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw (Poland)
Publication Date:
OSTI Identifier:
22285210
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 48; Journal Issue: 11; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CATIONS; FERRITE; MAGNETIC PROPERTIES; MILLING; NANOSTRUCTURES; POWDERS; RAMAN SPECTROSCOPY; SYNTHESIS; X-RAY DIFFRACTION; ZINC; ZINC HYDROXIDES