Evidences for dry deintercalation in layered compounds upon controlled surface charging in x-ray photoelectron spectroscopy

被引：15

作者：

Feldman, Y ^{[1
]}

Zak, A ^{[1
]}

Tenne, R ^{[1
]}

Cohen, H ^{[1
]}

机构：

[1] Weizmann Inst Sci, Mat & Interfaces Dept, IL-76100 Rehovot, Israel

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A | 2003年 / 21卷 / 05期

关键词：

D O I：

10.1116/1.1604131

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Pronounced surface diffusion is observed during x-ray photoelectron spectroscopy measurements of 2H platelets and inorganic fullerene-like (IF) MS2 (M=WMo) powders, intercalated with alkaline (A=K,Na) elements. Using controlled surface charging the intercalants migrate towards the surface, where they oxidize. This dry deintercalation is controllable via external charging parameters, yet showing that internal chemical and structural parameters play an important role in the process. Diffusion rates out of 214 matrixes are generally higher than in corresponding IF samples. Clear differences are also found between Mo and W-based systems. Application of this approach into surface modification and processing is, proposed. (C) 2003 American Vacuum Society.

引用

页码：1752 / 1757

页数：6

共 15 条

[11] Interplay of Cs concentration, dimensionality and superconductivity in CsxWO3 [J].