IRFE SUPERLATTICES - 3D PSEUDOMORPHISM OF FE ON (111) FCC IR

被引：7

作者：

ANDRIEU, S ^{[1
]}

RAVET, MF ^{[1
]}

LENOBLE, O ^{[1
]}

DUPUIS, V ^{[1
]}

PIECUCH, M ^{[1
]}

PIZZINI, S ^{[1
]}

BAUDELET, F ^{[1
]}

FONTAINE, A ^{[1
]}

机构：

[1] MENJS,CEA,CNRS,LURE,F-91405 ORSAY,FRANCE

来源：

EUROPHYSICS LETTERS | 1992年 / 18卷 / 06期

关键词：

D O I：

10.1209/0295-5075/18/6/010

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This paper describes the preparation and study of FeIr superlattices grown by molecular beam epitaxy. The samples were characterised by RHEED measurements, X-ray diffraction (XRD) and near-edge X-ray absorption spectroscopy (XAS). Electron diffraction shows that the surface structure of Fe on Ir is hexagonal up to a critical thickness of 3 ML and that the growth occurs layer by layer. An original method of thickness calibration by XRD on a series of FeIr superlattices is presented, which allows a precise determination of the distance of Fe planes. XRD measurements are in agreement with a ABCABC stacking sequence in the Fe films. Polarisation-dependent Fe K near-edge XAS indicate that the close-packed structure of Fe films, both in the plane and perpendicular to the hexagonal plane, is maintained up to a thickness of 5 ML of Fe. The critical thickness for superlattices is therefore larger than that of a <<free>> Fe film.

引用

页码：529 / 535

页数：7

共 18 条

[1]

ANDRIEU S, 1991, MATER RES SOC SYMP P, V221, P207, DOI 10.1557/PROC-221-207

[2]

ANDRIEU S, IN PRESS

[3]

BAUDELET F, 1991, THESIS U PARIS 11

[4]

BAUDELET F, IN PRESS PHYS REV B