MAGNETISM AND GROWTH OF ULTRATHIN CO FILMS GROWN EPITAXIALLY ON RU(0001)

被引：14

作者：

LIU, C

BADER, SD

机构：

[1] Materials Science Division, Argonne National Laboratory, Argonne

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1993年 / 119卷 / 1-2期

关键词：

D O I：

10.1016/0304-8853(93)90506-W

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low-energy electron diffraction and Auger spectroscopy have been used to determine that ultrathin films of Co grow pseudomorphically on Ru(0001) at room temperature in an island structure. Co thicknesses of 1-14 MLE (monolayer equivalents) were explored. The expanded Co lattice relaxes to its bulk spacing after a 500-degrees-C anneal. In-situ surface magneto-optic Kerr-effect measurements show ferromagnetic hysteresis loops with in-plane easy axes of magnetization for film thicknesses > 4 MLE. Thinner films are presumably affected by superparamagnetism. Annealing or Au coating the thicker films induces an out-of-plane easy axis of magnetization.

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页码：81 / 86

页数：6

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