Microwave magnetoabsorption in glass-coated amorphous microwires with radii close to skin depth
Microwave magnetoabsorption in glass-coated amorphous microwires with radii close to skin depth
复制标题
半径接近趋肤深度的玻璃涂层非晶微丝的微波磁吸收
DOI：
10.1063/1.1494847
复制
发表时间：
2002
影响因子：
3.2
通讯作者：
S. Bhagat
中科院分区：
文献类型：
--
作者：
S. Lofland;H. García;M. Vázquez;S. Bhagat
我们提出了微波磁吸收的频率依赖性的玻璃涂层的非晶微丝（Co 100 −xFex）72.5Si12.5B15。数据在室温下，在1-60 GHz的频率范围内的字段高达15 kOe的腔微扰技术或同轴传输线。产生的光谱强烈依赖于局部微波磁场和电场。我们已经发现，我们可以模拟光谱使用的解析解的问题的电磁散射从一个圆柱。我们证明，这些不寻常的光谱可以解释在铁磁共振和反铁磁共振。然而，由于电磁趋肤深度与半径相当，共振场和反共振场不遵循常规方程。
We present the frequency dependence of microwave magnetoabsorption in glass-coated amorphous microwires of (Co100−xFex)72.5Si12.5B15. The data were taken at room temperature in the frequency range of 1–60 GHz for fields up to 15 kOe by either a cavity perturbation technique or a coaxial transmission line. The resulting spectra strongly depend upon the local microwave magnetic and electric fields. We have found that we can simulate the spectra using an analytic solution to the problem of electromagnetic scattering from a cylinder. We demonstrate that these unusual spectra can be interpreted in terms of ferromagnetic resonance and antiferromagnetic resonance. However, because the electromagnetic skin depth is comparable to the radius, the resonance and antiresonance fields do not follow the conventional equations.