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.
机构:
Dept. of Mat. Sci. and Engineering, Cornell University, Ithaca, NY 14853, United StatesDept. of Mat. Sci. and Engineering, Cornell University, Ithaca, NY 14853, United States
Suzuki, Y.
Hwang, H.Y.
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Bell Laboratories, Lucent Technologies, 700 Mountain Avenue, Murray Hill, NJ 07974, United StatesDept. of Mat. Sci. and Engineering, Cornell University, Ithaca, NY 14853, United States
机构:
Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USAStanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
Mullenix, Joyce
El-Ghazaly, Amal
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Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USAStanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
El-Ghazaly, Amal
Lee, Dok Won
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Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USAStanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
Lee, Dok Won
Wang, Shan X.
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Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USAStanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
Wang, Shan X.
White, Robert M.
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Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USAStanford Univ, Dept Elect Engn, Stanford, CA 94305 USA