Gilbert Damping for Various Ni80Fe20 Thin Films Investigated Using All-Optical Pump–Probe Detection and Ferromagnetic Resonance
Gilbert Damping for Various Ni80Fe20 Thin Films Investigated Using All-Optical Pump–Probe Detection and Ferromagnetic Resonance
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DOI：
10.1143/apex.1.121301
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发表时间：
2008-11
影响因子：
2.3
通讯作者：
S. Mizukami;H. Abé;D. Watanabe;M. Oogane;Y. Ando;T. Miyazaki
中科院分区：
文献类型：
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作者：
S. Mizukami;H. Abé;D. Watanabe;M. Oogane;Y. Ando;T. Miyazaki
采用全光泵浦探测法研究了不同类型Ni80Fe20薄膜的Gilbert阻尼。磁化进动的频率和衰减时间与泵流量有关。在低泵浦流量下，根据磁场对磁化进动频率和衰减时间的依赖而得到的Gilbert阻尼常数在实验误差范围内与x波段铁磁共振得到的值相同。
All-optical pump–probe detection of magnetization precession has been performed to investigate Gilbert damping in several types of Ni80Fe20 films. The frequency and decay time of magnetization precession depended on pump fluence. At low pump fluence, Gilbert damping constants, derived from the magnetic field dependence on frequency and decay time of magnetization precession, were identical to values obtained from X-band ferromagnetic resonance within the experimental errors.