Perpendicular Magnetization of Epitaxial FePt(001) Thin Films with High Squareness and High Coercive Force
Perpendicular Magnetization of Epitaxial FePt(001) Thin Films with High Squareness and High Coercive Force
复制标题
高方形度和高矫顽力外延 FePt(001) 薄膜的垂直磁化
DOI：
10.1143/jjap.35.l1264
复制
发表时间：
1996
影响因子：
1.5
通讯作者：
Masato Homma
中科院分区：
文献类型：
--
作者：
Masato Homma
采用射频磁控溅射法制备了垂直磁化外延FePt(001)薄膜。 FePt 层的长程有序参数 S 被发现为 ∼0.9。 FePt(002) 和 Pt(200) 峰的非常窄的 X 射线摇摆曲线（FWHM<1°）表明这两层本质上都是单晶。随着Pt缓冲层厚度d Pt 的增加，矩形比M r/M S 和矫顽力H C 分别增加至100%和7.2 kOe。 FePt(001)薄膜的|0.58°|极磁光克尔旋转θ K 谱中的峰值位于2.0 eV（波长630 nm）的光子能量处，这与多晶FePt有序合金的峰值不一致。
Perpendicular magnetized epitaxial FePt(001) thin films were prepared by RF-magnetron sputtering. The long range order parameter S of the FePt layer was found to be ∼0.9. Very narrow X-ray rocking curves ( FWHM<1°) of the FePt(002) and Pt(200) peaks indicate that both layers are essentially single crystalline. With increasing Pt buffer layer thickness d Pt, the squareness M r/M S and coercive force H C were found to increase to 100% and 7.2 kOe, respectively. The FePt(001) thin film has a |0.58°| peak at a photon energy of 2.0 eV (630 nm wavelength) in the polar magnetooptical Kerr rotation θ K spectrum, which does not agree with that of the polycrystalline FePt ordered alloy.