MAGNETIC-PROPERTIES OF PARTICLES FORMED BY H-2 REDUCTION OF CO-FERRITE OR GAMMA-FEOOH PARTICLES WRAPPED WITH EXFOLIATED MOS2

Authors
TEMPLETON TL YOSHIDA Y LI XZ ARROTT AS CURZON AE HAMED F GEE MA SCHURER PJ LACOMBE JL
Citation
Tl. Templeton et al., MAGNETIC-PROPERTIES OF PARTICLES FORMED BY H-2 REDUCTION OF CO-FERRITE OR GAMMA-FEOOH PARTICLES WRAPPED WITH EXFOLIATED MOS2, IEEE transactions on magnetics, 29(6), 1993, pp. 2625-2627
Citations number
5
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
29
Issue
6
Year of publication
1993
Part
1
Pages
2625 - 2627
Database
ISI
SICI code
0018-9464(1993)29:6<2625:MOPFBH>2.0.ZU;2-8
Abstract
Fine particles of alpha-Fe or Fe(Co) are prepared by the reduction in H-2 of gamma-FeOOH or Co-ferrite particles which have been wrapped in monomolecular layers of exfoliated MoS2. The presence of the MoS2 rest ricts coalescence of the starting particles while allowing the reducti on to take place. Magnetic moments and coercivities are determined at temperature during processing. Results are given for magnetization mea surements, electron microscopy, Mossbauer effect spectroscopy, and x-r ay diffraction. Enhanced coercivities are observed when MoS2 is presen t. Surface pinnning is deduced from the approach to magnetic saturatio n.