Spin-reorientation transition in thin films studied by the component-resolved Kerr effect - art. no. 134425

Citation
Hf. Ding et al., Spin-reorientation transition in thin films studied by the component-resolved Kerr effect - art. no. 134425, PHYS REV B, 6313(13), 2001, pp. 4425
Citations number
37
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
0163-1829 → ACNP
Volume
6313
Issue
13
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010401)6313:13<4425:STITFS>2.0.ZU;2-N
Abstract
We present a method to separate the longitudinal, polar, and equatorial mag netization components that may contribute to a mixed magneto-optical Kerr-e ffect signal and demonstrate how the spin-reorientation transition (SRT) ca n be investigated by means of simple Kerr magnetometry. In a Co/Au(111) fil m with thickness within the SRT region we find hysteresis loops with nonvan ishing remanence in all three components when a field is applied within the film plane. A vertical field, however, drives the same film into a single domain state exhibiting full remanence. The fact that remanence is found in all magnetization components, and full remanence is obtained in a vertical field, rules out that the transition proceeds via a state of canting of ma gnetization and indicates that it proceeds via a state of coexisting phases .