MAGNETIC-PROPERTIES AND MOSSBAUER-SPECTRA OF NANOSIZED COFE2O4 POWDERS

Authors
GRIGOROVA M BLYTHE HJ BLASKOV V RUSANOV V PETKOV V MASHEVA V NIHTIANOVA D MARTINEZ LM MUNOZ JS MIKHOV M
Citation
M. Grigorova et al., MAGNETIC-PROPERTIES AND MOSSBAUER-SPECTRA OF NANOSIZED COFE2O4 POWDERS, Journal of magnetism and magnetic materials, 183(1-2), 1998, pp. 163-172
Citations number
19
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
183
Issue
1-2
Year of publication
1998
Pages
163 - 172
Database
ISI
SICI code
0304-8853(1998)183:1-2<163:MAMONC>2.0.ZU;2-8
Abstract
CoFe2O4 fine powders with particle sizes between 43 Angstrom (4.3 nm) and 465 Angstrom (46.5 nm) were produced by a method of 'gentle' chemi stry. It was found that a surface layer with thickness of about 10 Ang strom does not contribute to the magnetization in the fields used. Max imum coercivity of 14 kOe and reduced remanence of 0.64 were measured at 5 K after magnetization in 50 kOe indicating a cubic-type magnetocr ystalline anisotropy. (C) 1998 Elsevier Science B.V. All rights reserv ed.