Magnetostatic wave dynamic magnetization response in yttrium iron garnet films
Magnetostatic wave dynamic magnetization response in yttrium iron garnet films
复制标题
钇铁石榴石薄膜中的静磁波动态磁化响应
DOI：
--
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
C. Patton
中科院分区：
文献类型：
--
作者：
M. Tsankov;Ming Chen;C. Patton
已测量 5-6 GHz 钇铁石榴石薄膜中静磁波的动态微波磁化 (DMM) 振幅与输入功率的关系。该测量基于功率传输频谱中的特征频移。这种变化与有效静态磁化强度的降低有关，因此与高功率下 DMM 振幅的增加有关。测量是在 7.2 微米厚的单晶钇铁石榴石薄膜上进行的。使用 5-6 GHz 的脉冲扫频微波信号来发射静磁波。信号由平面微带换能器激发和检测。对静磁前向体积波（MSFVW）和静磁表面波（MSSW）进行了测量。脉冲微波信号的占空比保持在 0.1%，以避免样品加热效应。传输与频率曲线中小特征的变化用于确定 DMM 幅度。在低功率下，DMM 幅度...
The dynamic microwave magnetization (DMM) amplitude of magnetostatic waves in yttrium iron garnet films at 5–6 GHz has been measured as a function of input power. The measurement is based on the characteristic frequency shift in the power transmission spectrum. This shift is related to the reduction of the effective static magnetization and, therefore, the increase of the DMM amplitude at high power. The measurements were made on 7.2‐μm‐thick, single‐crystal yttrium iron garnet films. A pulsed frequency‐swept microwave signal at 5–6 GHz was used to launch the magnetostatic waves. The signals were excited and detected by planar microstrip transducers. Measurements were made for magnetostatic forward volume waves (MSFVW) and magnetostatic surface waves (MSSW). The duty cycle of the pulsed microwave signal was kept at 0.1% in order to avoid sample heating effects. The shifts for small features in the transmission vs frequency profiles were used to determine the DMM amplitudes. At low power, the DMM amplitude...