Ferromagnetic resonance and magnetoelastic demodulation in thin active films with an uniaxial anisotropy
Ferromagnetic resonance and magnetoelastic demodulation in thin active films with an uniaxial anisotropy
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DOI：
10.1063/1.3382911
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发表时间：
2010-05-01
影响因子：
3.2
通讯作者：
Nikitov, S.
中科院分区：
文献类型：
--
作者：
Klimov, A.;Ignatov, Yu.;Nikitov, S.
报道了单轴TbCo2/FeCo层状纳米结构和La0.7Sr0.3MnO_3薄膜在自旋重取向相变(SRT)附近的铁磁共振(FMR)和磁弹性激发的实验和理论研究结果。给出了反射微波信号的幅度与外加磁场强度的实验关系，并与理论结果进行了比较。在SRT附近的铁磁共振反射率的增加是明显的。利用激光偏转技术，实验观察了调制微波电磁场对样品弯曲振动的低频磁弹性激励。在FMR和SRT的组合条件下，观察到调制频率处的振动幅度增加，这与理论一致。(C)2010年美国物理研究所。[DOI：10.1063/1.3382911]
The results of experimental and theoretical studies of ferromagnetic resonance (FMR) and magnetoelastic excitations near the spin reorientation transition (SRT) in an uniaxial TbCo2/FeCo layered nanostructure and a La0.7Sr0.3MnO3 film are reported. Experimental dependences of the amplitude of the reflected microwave signal versus the external magnetic field strength are presented in comparison with the theoretical ones. An increase in FMR reflectivity in the vicinity of SRT is clearly demonstrated. Low frequency magnetoelastic excitation of flexural vibrations of the samples by means of modulated microwave electromagnetic field is observed experimentally using a laser beam deflection technique. The increase in amplitude of vibrations at modulation frequency under combined FMR and SRT conditions is observed in agreement with the theory. (C) 2010 American Institute of Physics. [doi:10.1063/1.3382911]