Curie temperature enhancement and induced Pd magnetic moments for ultrathin Fe films grown on stepped Pd(001)

被引：53

作者：

Choi, HJ ^{[1
]}

Kawakami, RK

Escorcia-Aparicio, EJ

Qiu, ZQ

Pearson, J

Jiang, JS

Li, DQ

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：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.82.1947

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Fe films grown in ultrahigh vacuum onto a curved Pd(001) substrate with a continuous gradient in atomic step density were studied in situ via the surface magneto-optic Kerr effect (SMOKE). The steps induce an in-plane, uniaxial magnetic anisotropy with the easy axis perpendicular to the step edges, and whose strength scales linearly with step density. The Curie temperature of 1-2 monolayers of Fe is enhanced by the steps relative to that on a flat substrate. The enhancement is attributed to a step-induced Pd moment at step edges, as inferred from the enhancement of the SMOKE signal with step density.

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页码：1947 / 1950

页数：4

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