An STM study of the initial stages of oxidation of Ni3Al(110)

被引：19

作者：

Cotterill, GF ^{[1
]}

Niehus, H ^{[1
]}

OConnor, DJ ^{[1
]}

机构：

[1] HUMBOLDT UNIV BERLIN,INST PHYS ASP,D-10115 BERLIN,GERMANY

来源：

SURFACE REVIEW AND LETTERS | 1996年 / 3卷 / 03期

关键词：

D O I：

10.1142/S0218625X96002369

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：

The initial stages of oxygen adsorption on Ni3Al(110) at 9700 K have been studied by scanning tunneling microscopy (STM) and low energy electron diffraction (LEED). We report the observation of two different reconstructed surface phases. First, on the well-ordered surface, after exposure to O-2 at 970 K for doses < 5L, a saturation coverage (1/4 ML) of Ni3Al{110} c(2 x 2)-O is observed. Secondly, we report an oxygen-induced reconstruction which is incommensurate with the substrate, resulting after an incomplete annealing of the suface following Ar+ bombardment. A structure model for this phase is proposed.

引用

页码：1355 / 1363

页数：9

共 9 条

[1] INITIAL-STAGES OF OXIDATION OF THE NI3AL ALLOY - STRUCTURE AND COMPOSITION OF THE ALUMINUM-OXIDE OVERLAYER STUDIED BY XPS, LEIS AND LEED
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