X-ray surface diffraction analysis of structural transformations on the (001) surface of oxidized SrTiO3

被引：15

作者：

Kazimirov, A

Goodner, DM

Bedzyk, MJ

Bai, J

Hubbard, CR

机构：

[1] Northwestern Univ, Dept Mat Sci, Evanston, IL 60208 USA

[2] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[3] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

SURFACE SCIENCE | 2001年 / 492卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

alkaline earth metals; X-ray scattering; diffraction; and reflection; atomic force microscopy; surface segregation; surface; structure; morphology; roughness; and topography;

D O I：

10.1016/S0039-6028(01)01442-X

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：

Surface X-ray scattering was used to study structural modifications on the (0 0 1) surface of oxidized SrTiO3. Grazing incidence in-plane X-ray diffraction revealed a sequence of quasi-powder diffraction peaks originating from crystallites with nearly random in-plane orientation. This diffraction pattern is associated with micro-crystallites of irregular shape observed by atomic force microscopy on the surface after annealing in oxygen. Analysis based on available powder diffraction data identified these crystallites as monoclinic TiO. Different oxygen annealing treatments led to dramatic changes in the specular (0 0 L) crystal truncation rods indicating significant structural modifications in the underlying single crystal SrTiO3 surface layer. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：L711 / L716

页数：6