We present the frequency dependence of microwave magnetoabsorption in glass-coated amorphous microwires of (Co 100-xFe x) 72.5Si 12.5B 15. 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.
|Original language||English (US)|
|Number of pages||6|
|Journal||Journal of Applied Physics|
|State||Published - Aug 15 2002|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)