Brillouin scattering in FeSi/X/FeSi double‐layer films, X=ZnO and SiO2
作者:
Toru Otake,
Yoichi Haneda,
Akira Yoshihara,
Yutaka Shimada,
Tadao Fujimura,
期刊:
Journal of Applied Physics
(AIP Available online 1990)
卷期:
Volume 67,
issue 7
页码: 3456-3461
ISSN:0021-8979
年代: 1990
DOI:10.1063/1.345334
出版商: AIP
数据来源: AIP
摘要:
Thermally‐excited spin waves in double‐layer films of FeSi/X/FeSi (where X=ZnO and SiO2) have been studied by Brillouin scattering. The thickness of the FeSi (2.6 wt. % of Si) layers is fixed at 1100±30 A˚. Scattering from the Damon‐Eshbach‐type surface wave and the standing spin waves has been observed. The standing spin‐wave structure of a 28‐A˚‐thick SiO2spacer is modified by interlayer exchange coupling, but not that of a 5‐A˚‐thick ZnO spacer. The general trend of magnon frequencies as functions of the external magnetic field, the surface wave vector, and spacer thickness can be explained by the theory developed by Gru¨nberg [J. Appl. Phys.51, 4338 (1980)]. The Damon‐Eshbach‐type surface mode exhibits a systematic deviation from that theory at small surface‐wave vectors.
点击下载:
PDF
(727KB)
返 回