Surface diffusion and surface growth in nanofilms of mixed rocksalt oxides

被引：7

作者：

Harris, DJ ^{[1
]}

Farrow, TS

Harding, JH

Lavrentiev, MY

Allan, NL

Smith, W

Purton, JA

机构：

[1] UCL, Dept Phys & Astron, London WC1E 6BT, England

[2] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England

[3] Univ Bristol, Dept Chem, Bristol BS8 1TS, Avon, England

[4] CCLRC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2005年 / 7卷 / 08期

关键词：

D O I：

10.1039/b418081j

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：

We have modelled the surface diffusion and growth of BaO and SrO both in the homoepitaxial and heteroepitaxial ( BaO on SrO and SrO on BaO) cases. The diffusion proceeds most favourably by an exchange mechanism involving the surface layer. When impurities are adsorbed on the surface this can lead to intermixing between the layers. This strongly suggests that ionic materials may not be grown on a substrate with a similar structure without significant intermixing. Island growth begins with the formation of individual clusters which grow and merge together.

引用

页码：1839 / 1844

页数：6

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