BRILLOUIN LIGHT-SCATTERING ON COBALT-CHROMIUM FILMS

被引：8

作者：

SRINIVASAN, G

PATTON, CE

机构：

[1] Colorado Univ, Fort Collins, CO, USA, Colorado Univ, Fort Collins, CO, USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1986年 / 22卷 / 05期

关键词：

LIGHT; -; Scattering; MAGNETIZATION; Analysis;

D O I：

10.1109/TMAG.1986.1064510

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Brillouin light scattering has been used to observe high-frequency thermal magnetic excitations in ion-beam sputtered Co-Cr thin films. The measurements were performed on 82 at. % Co samples, 100 angstrom, 350 angstrom and 750 angstrom in thickness, sputtered on single-crystal Si substrates. The Brillouin scattering signals from these Co-Cr films were quite strong. All spectra show scattering due to surface magnons propagating in the film plane. Scattering due to bulk spin waves was found for the two thicker films. From the measured magnon dispersion for the surface mode, Damon-Eshback theory was used to calculate the magnetization, the perpendicular anisotropy field, and the gyromagnetic ratio for the films. The spin wave stiffness parameter was determined from the bulk magnon dispersion. These magnetic parameters are in reasonable agreement with results from ferromagnetic resonance.

引用

页码：996 / 998

页数：3

共 10 条

[1] MAGNETOSTATIC MODES OF A FERROMAGNET SLAB [J].