Spin-wave resonances in La0.7Sr0.3MnO3 films:: Measurement of spin-wave stiffness and anisotropy field

被引：23
|
作者：
Golosovsky, M.
Monod, P.
Muduli, P. K.
Budhani, R. C.
机构：
[1] ESPCI, Lab Phys Solide, F-75231 Paris 05, France
[2] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India
来源：
PHYSICAL REVIEW B | 2007年 / 76卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.76.184413
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We studied magnetic-field-dependent microwave absorption in epitaxial La0.7Sr0.3MnO3 films using an 9.5 GHz Bruker electron-spin-resonance spectrometer. By analyzing the angular and temperature dependence of the ferromagnetic and spin-wave resonances we determine spin-wave stiffness and perpendicular anisotropy field. The spin-wave stiffness as found from the spectrum of the standing spin-wave resonances in thin films is in fair agreement with the results of inelastic neutron scattering studies on a single crystal of the same composition.
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页数：7
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