کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1802440 | 1024597 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Spin-wave resonance and magnetic anisotropy in FePt thin films Spin-wave resonance and magnetic anisotropy in FePt thin films](/preview/png/1802440.png)
Ferromagnetic Resonance (FMR) measurements at room temperature and X-band microwave frequency were performed on polycrystalline FePt thin films with face-centered cubic structure. With the external field perpendicular to the film plane, the absorption fields Hn of the odd and even spin-wave resonance modes n detected for the Fe0.44Pt0.56(45 nm)/Si(1 0 0) and Fe0.51Pt0.49(105 nm)/Pt(55 nm)/MgO(1 0 0) films, were found to obey the well-known Hn×n2 ratio, giving for these films the exchange stiffness constant values of 3.9×10−8 and 4.4×10–7 erg/cm, respectively. The study of the out-of-plane angular dependence of the absorption field of the uniform FMR mode allowed the measurement of the effective magnetic anisotropy constants of 5.3×106 , 6.4×106 , and 6.7×106 erg/cm3, related, respectively, to the [1 1 1], [1 0 0], and [1 1 0] textures present in the films.
Journal: Journal of Magnetism and Magnetic Materials - Volume 308, Issue 1, January 2007, Pages 120–125