MAGNETIC ORIENTATION OF NI IN ZN-NI FERRITES STUDIED BY SOFT-X-RAY MAGNETIC CIRCULAR-DICHROISM

Authors
PONG WF CHANG YK SU MH TSENG PK LIN HJ HO GH TSANG KL CHEN CT
Citation
Wf. Pong et al., MAGNETIC ORIENTATION OF NI IN ZN-NI FERRITES STUDIED BY SOFT-X-RAY MAGNETIC CIRCULAR-DICHROISM, Physical review. B, Condensed matter, 55(17), 1997, pp. 11409-11413
Citations number
20
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
55
Issue
17
Year of publication
1997
Pages
11409 - 11413
Database
ISI
SICI code
0163-1829(1997)55:17<11409:MOONIZ>2.0.ZU;2-U
Abstract
We report the Ni L-2,L-3-edge magnetic circular dichroism (MCD) measur ements of ferrimagnetic ZnxNi1-xFe2O4 (x = 0.0, 0.26, 0.50, and 0.75). The Ni MCD asymmetry ratio was found to decrease with increasing x, s howing a reduction of the Ni average magnetic moment with Zn content. This observation is interpreted in terms of the variations in the Yafe t-Kittel-type canted angles of the Ni moment, giving new insight into the superexchange interactions involving the Ni ions. A comparison wit h the non-Ni-specific neutron scattering and Mossbauer studies is give n.