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Size control of MnZn ferrite nanoparticles and their XAFS spectra
Author(s) -
Moro Yuki,
Katayanagi Hikaru,
Kimura Shinji,
Shigeoka Daiki,
Hiroki Tomoyuki,
Mashino Toshiyuki,
Ichiyanagi Yuko
Publication year - 2010
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.3621
Subject(s) - x ray absorption fine structure , amorphous solid , ferrite (magnet) , magnetization , diffraction , analytical chemistry (journal) , nanoparticle , materials science , metal , particle size , absorption spectroscopy , chemistry , crystallography , nanotechnology , metallurgy , spectroscopy , optics , physics , chromatography , quantum mechanics , magnetic field , composite material
MnZn ferrite (Mn 0.5 Zn 0.5 Fe 2 O 4 ) nanoparticles in amorphous SiO 2 were prepared using the chemical wet method. On the basis of the X‐ray diffraction peaks, the particle sizes were estimated to be between 17 and 41 nm, depending on the flow rate of Ar gas. The particle size increased with the flow rate of Ar gas. From magnetization measurements, the magnetization values varied in accordance with the conditions of Ar gas. To clarify the electronic state of metal ions of nanoparticles, X‐ray absorption fine structure (XAFS) measurements were performed, and the results were compared with X‐ray diffraction patterns. Copyright © 2010 John Wiley & Sons, Ltd.