Structure and magnetism of Fe thin films grown on Rh(001) studied by photoelectron spectroscopy

被引:19
作者
Hayashi, K
Sawada, M
Harasawa, A
Kimura, A
Kakizaki, A [1 ]
机构
[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
[2] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan
[3] High Energy Accelerator Res Org, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan
来源
PHYSICAL REVIEW B | 2001年 / 64卷 / 05期
关键词
D O I
10.1103/PhysRevB.64.054417
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Structural and magnetic properties of Fe thin films grown epitaxially on Rh(001) are studied by spin- and angle-resolved valence-band photoemission, Fe 2(P3/2) photoelectron diffraction, and x-ray magnetic circular dichroism experiments. The valence-band structure shows characteristic features of a fcc high-spin state at 4 monolayers (ML) and those of ferromagnetic bulk bcc Fe at 8 ML. The structure of the Fe film reveals fct(001) compressed along the direction perpendicular to the surface in the low-coverage region and gradually changes to distorted bcc(110) as the film thickness increases. The magnetic moments increase as a function of the film thickness and reach the same value as in bulk bcc Fe above 6 ML. The Fe films show in-plane ferromagnetism above 2 ML, and the thickness dependence of the magnetic properties is discussed in connection with the characteristic growth mode.
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页数:6
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