Temperature Dependence of the Ferromagnetic Resonance Linewidth of Europium Sulfide
作者:
M. C. Franzblau,
G. E. Everett,
A. W. Lawson,
期刊:
Journal of Applied Physics
(AIP Available online 1967)
卷期:
Volume 38,
issue 11
页码: 4462-4465
ISSN:0021-8979
年代: 1967
DOI:10.1063/1.1709149
出版商: AIP
数据来源: AIP
摘要:
The temperature dependence of the ferromagnetic resonance linewidth of highly polished single‐crystal spheres of EuS was measured in the range from 2.2° to 30°K, using standard microwave techniques at a frequency of 22.65 GHz. The linewidth increases from ∼5 Oe at 2.2°K to ∼400 Oe at the Curie point, and continues to increase in the paramagnetic range to a value of 1000 Oe at 78°K. The linewidth varies linearly with reciprocal magnetization from 2.2° to 18°K, as predicted by the Landau‐Lifshitz equation and can be characterized by a temperature‐independent microphysical damping constant, &lgr;, equal to 1.9±0.09×108rad/sec within this temperature range.
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