Magnetic properties of ultrathin Fe films grown on stepped W(001) and Pd(001) substrates

被引：18
|
作者：
Choi, HJ [1 ]
Kawakami, RK
Escorcia-Aparicio, EJ
Qiu, ZQ
Pearson, J
Jiang, JS
Li, DQ
Osgood, RM
Bader, SD
机构：
[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[2] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA
来源：
JOURNAL OF APPLIED PHYSICS | 1999年 / 85卷 / 08期
关键词：
D O I：
10.1063/1.370502
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In both Fe/W(001) and Fe/Pd(001) systems, the atomic steps induce an in-plane uniaxial magnetic anisotropy with the easy magnetization axis perpendicular to the step edges. The strength of the step-induced anisotropy was found to have a power law dependence on the step density: a quadratic dependence in the Fe/W system but a linear dependence in the Fe/Pd system. In addition, the Curie temperature is found to be higher on the stepped surface in the Fe/Pd system as compared to the flat surface. The enhancement of the Curie temperature is attributed to the step-induced Pd moments which is supported by the increased surface magneto-optic Kerr effect signal on the stepped surface. No such enhancement of either Curie temperature or magnetic moment was observed in the Fe/W system. (C) 1999 American Institute of Physics. [S0021-8979(99)27608-6].
引用
收藏
页码：4958 / 4960
页数：3
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