Strain and anisotropy effects on spin waves in epitaxial La0.67Sr0.33MnO3 films -: art. no. 182501

被引:11
作者
Talbayev, D [1 ]
Zhao, H
Lüpke, G
Chen, J
Li, Q
机构
[1] Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23187 USA
[2] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
基金
美国国家科学基金会;
关键词
D O I
10.1063/1.1922073
中图分类号
O59 [应用物理学];
学科分类号
摘要
Uniform magnetization precession in the ferromagnetic state of La0.67Sr0.33MnO3 films grown on different substrates is investigated in the 50-300 K temperature range in magnetic fields of up to 1.3 T. The precession was induced by an optical pump pulse and probed by a time-delayed pulse using magneto-optical Kerr effect. The measured field dependence of the precession frequency agrees well with calculation from the Landau-Lifshitz-Gilbert equation using different uniaxial anisotropies for different substrates. The field-dependent relaxation times of the exponentially decaying precession are in 100-1400 ps range. (c) 2005 American Institute of Physics.
引用
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页码:1 / 3
页数:3
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