Surface structure and composition of NiAl(100) by low-energy ion scattering

被引：25

作者：

Roos, WD ^{[1
]}

duPlessis, J ^{[1
]}

vanWyk, GN ^{[1
]}

Taglauer, E ^{[1
]}

Wolf, S ^{[1
]}

机构：

[1] EURATOM,MAX PLANCK INST PLASMA PHYS,GARCHING,GERMANY

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS | 1996年 / 14卷 / 03期

关键词：

D O I：

10.1116/1.580312

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The atomic structure of the (100) surface of NiAl was investigated by low-energy ion scattering spectrometry (LEISS) using 1000 eV He+ ions as well as alkali ion impact collision ion scattering spectrometry (ALICISS), using 1450 eV Na+ ions. The ALICISS results were analyzed with a computer program based on a model using hitting probability concepts. The LEISS results showed that the top layer consisted mainly of Al with an Al/Ni ratio of 76/24 and the second layer entirely Ni. The ALICISS results could be best explained by a vertical relaxation of 25% (Delta d(12)=-0.36 Angstrom) between the first and second layers and a relaxation of 15% (Delta d(24)=-0.43 Angstrom) between the second and fourth layers. These results are discussed in terms of published data from the literature. (C) 1996 American Vacuum Society.

引用

页码：1648 / 1651

页数：4

共 16 条

[11] SURFACE-STRUCTURE OF STEPPED NIAL(111) BY LOW-ENERGY LI+ ION-SCATTERING [J].