FERROMAGNETIC RESONANCE IN SINGLE-CRYSTAL BAO.6FE2O3

被引:9
作者
KURTIN, S
FONER, S
LAX, B
机构
[1] Francis Bitter National Magnet Laboratory, Massachusetts Institute of Technology, Cambridge
关键词
D O I
10.1063/1.1657469
中图分类号
O59 [应用物理学];
学科分类号
摘要
The theory of magnetic resonance in a highly anisotropic, uniaxial ferrimagnet is summarized and curves for the resonance behavior of BaO·6Fe2O3 as a function of applied field, parametrized with respect to angular orientation, are presented. Microwave ferrimagnetic resonance experiments performed from 66 to 120 GHz in a broad-band, low-Q waveguide system with applied magnetic fields up to 60 kG are reported. Sample temperatures ranged from 4.2°to 300°K. Good agreement between theory and experiment is found for spherical, single-crystal samples. Samples of platelet geometry were also investigated. A brief discussion of observed magnetostatic modes is presented, along with evidence of nonlinear resonance response in BaO·Fe2O3 at 4.2°K for rf powers above 60 mW in the waveguide. The observed resonance linewidth was less than 10 G at 4.2°K. © 1969 The American Institute of Physics.
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页码:818 / &
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