Interaction of metal with oxide films:: V on Cr2O3(0001)/Re(0001) and Cr on V2O3(0001)/Re(0001)

被引：4
|
作者：
Xiao, WD [1 ]
Xie, K [1 ]
Guo, QL [1 ]
Wang, EG [1 ]
机构：
[1] Chinese Acad Sci, Inst Phys, State Key Lab Surface Phys, Beijing 100080, Peoples R China
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2002年 / 14卷 / 25期
关键词：
D O I：
10.1088/0953-8984/14/25/302
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The interactions of V with Cr2O3(0001) films and Cr with V2O3(0001) films at room temperature are studied using x-ray photoelectron spectroscopy and low-energy-electron diffraction. The results show that the deposited V is oxidized and the Cr2O3(0001) surface is reduced at the initial coverage due to the interaction of V with the Cr2O3 substrate; V becomes metallic at V coverage greater than 5 monolayer equivalent. Full oxidization of the deposited vanadium cannot be achieved by O-2 exposure at room temperature for 20 min. However, V2O3(0001) films have been observed after heating the sample to 600-700 K in oxygen ambient at 1 x 10(-7) mbar. Similar results have been obtained for the Cr/V2O3(0001)/Re(0001) system.
引用
收藏
页码：6321 / 6328
页数：8
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