Magnetic properties of amorphous Gd-Fe films prepared by evaporation
Magnetic properties of amorphous Gd-Fe films prepared by evaporation
复制标题
蒸发法制备非晶Gd-Fe薄膜的磁性能
DOI：
10.1063/1.322698
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发表时间：
1976
影响因子：
3.2
通讯作者：
R. Taylor
中科院分区：
文献类型：
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作者：
R. Taylor
通过电子束共蒸发元素制备了0.18<x<0.33的非晶GdxFe 1-x薄膜。研究了薄膜的各向异性与组分的关系以及饱和磁化强度与组分和温度的关系。与各向异性在平面内的蒸发Gd-Co膜相比，发现Gd-Fe膜具有强的垂直各向异性，单轴各向异性常数（Ku）从x=0.18时的3.8×105 erg/cm 3单调降低到x=0.33时的2.0×105 erg/cm 3。垂直各向异性场（HK）在补偿组合物（x=0.26）处达到最大值，并且在两侧迅速下降。研究结果表明，蒸发膜中的各向异性是由于比溅射膜中假设存在的对有序更长范围的结构有序。饱和磁化强度的测量表明，非晶合金的磁化强度可以密切接近纯晶体Gd和Fe的时刻。发现Fe的0 °K磁矩为B。
Amorphous GdxFe1−x films with 0.18<x<0.33 were prepared by electron‐beam coevaporation of the elements. The composition dependence of anisotropy and the composition and temperature dependence of saturation magnetization of the films were studied. In contrast to evaporated Gd‐Co films, where anisotropy is in‐plane, the Gd‐Fe films were found to have strong perpendicular anisotropy with the uniaxial anisotropy constant (Ku) decreasing monotonically from 3.8×105 erg/cm3 at x=0.18 to 2.0×105 erg/cm3 at x=0.33. The perpendicular anisotropy field (HK) reached a maximum at the compensation composition (x=0.26) and fell off rapidly on both sides. The findings suggest that anisotropy in evaporated films is due to a longer‐range structural ordering than the pair ordering which is assumed to exist in sputtered films. Saturation magnetization measurements showed that magnetization of the amorphous alloys could be closely approximated from the moments of pure crystalline Gd and Fe. The 0 °K moment of Fe was found to b...