کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1804815 | 1024656 | 2006 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Field-dependent spin-wave damping in ferromagnet/antiferromagnet bilayers Field-dependent spin-wave damping in ferromagnet/antiferromagnet bilayers](/preview/png/1804815.png)
Damon Eshbach mode is used to explain the dependence of spin-wave frequency of ferromagnetic layer in thin ferromagnetic (FM)/antiferromagnetic bilayer (FM/AFM) (Fe/FeF2)(Fe/FeF2) as a function of external field. We show that the exchange bias changes as a function of external field. Field-dependent spin-wave damping is calculated by Born approximation. A random field, due to roughness at interface, is invoked to explain the large broadening of the spin-wave mode when the AFM layer is present. In this calculation, the broadening of the spin-wave mode depends on the square of linewidth random fields. To explain the broadening of the spin-wave mode with observed results, the linewidth random fields should decrease with external field. For a magnitude of external field, we have a peak in broadening that can also be observed in experimental results.
Journal: Journal of Magnetism and Magnetic Materials - Volume 299, Issue 1, April 2006, Pages 240–246