A comparison of surface segregation for two semi-Heusler alloys:: TiCoSb and NiMnSb

被引：23

作者：

Caruso, AN

Borca, CN

Ristoiu, D

Nozières, JP

Dowben, PA

机构：

[1] Univ Nebraska, Dept Phys & Astron, Brace Lab 116, Lincoln, NE 68588 USA

[2] Univ Nebraska, Ctr Mat Res & Anal, Brace Lab 116, Behlen Lab Phys, Lincoln, NE 68588 USA

[3] CNRS, Lab Louis Neel, F-38042 Grenoble 09, France

来源：

SURFACE SCIENCE | 2003年 / 525卷 / 1-3期

关键词：

surface segregation; alloys; angle resolved photoemission;

D O I：

10.1016/S0039-6028(02)02526-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Very different types of surface segregation are found for very similar Heusler alloy materials. We observed significant manganese and antimony segregation to the surfaces and near surface regions of the semi-Heusler alloys NiMnSb and TiCoSb respectively. The Mn and Sb surface enrichment was characterized by angle resolved core level photoemission. Indications Of surface disorder from low energy electron diffraction provide complimentary evidence of segregation. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：L109 / L115

页数：7

共 33 条

[1] Valence-band structure of the skutterudite compounds CoAs3, CoSb3, and RhSb3 studied by x-ray photoelectron spectroscopy [J].