Citation
Hd. Pfannes et al., STUDY OF FERROFLUIDS BY MOSSBAUER-SPECTROSCOPY, Hyperfine interactions, 113(1-4), 1998, pp. 507-515
Citations number
20
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Physics, Nuclear","Physics, Condensed Matter
Journal title
ISSN journal
03043843
Volume
113
Issue
1-4
Year of publication
1998
Pages
507 - 515
Database
ISI
SICI code
0304-3843(1998)113:1-4<507:SOFBM>2.0.ZU;2-M
Abstract
The parameters of the log-normal size distribution of a MnFe2O4 ferrof
luid powder sample have been determined by X-ray diffraction. The mean
blocking temperature was determined from the maximum of chi(i)(T) Mos
sbauer spectra at 4.2-300 K are interpreted by a new simple theory of
superparamagnetism and taking a reduction of the internal magnetic fie
ld for small particles, a size dependence of the anisotropy constant,
the size distribution and collective excitations into account.