Ordered overlayers of Ca on TiO2(110)-1x1

被引：0
作者：
Bikondoa, O
Pang, CL
Muryn, CA
Daniels, BG
Ferrero, S
Michelangeli, E
Thornton, G
机构：
[1] UCL, London Ctr Nanotechnol, London WC1H 0AJ, England
[2] UCL, Dept Chem, London WC1H 0AJ, England
[3] Univ Manchester, Nanosci Res Ctr, Manchester M13 9PL, Lancs, England
[4] Univ Manchester, Dept Chem, Manchester M13 9PL, Lancs, England
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 43期
关键词：
D O I：
10.1021/jp048143l
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：
Scanning tunneling microscopy (STM) and low-energy electron diffraction (LEED) have been used to examine the structure of ordered adlayers of Ca on TiO2(110)-1 x 1 formed by metal vapor deposition. A comparison is made with structures formed by segregation of Ca from the bulk, with similar structures being found for the two preparation methods below a monolayer coverage. At low coverages, rows of width similar to0.6-0.9 nm develop in the [1 (1) over bar0] and [001] azimuths. At coverages equivalent to a single calcium layer, a c(6 x 2) overlayer is formed. At coverages above a single layer, a disordered structure develops and a LEED pattern with ((2)(-0.1) (0)(1)) symmetry is observed.
引用
收藏
页码：16768 / 16771
页数：4
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