Anomalous expansion of CeO2 nanocrystalline membranes

被引：85

作者：

Nair, JP

Wachtel, E

Lubomirsky, I ^{[1
]}

Fleig, J

Maier, J

机构：

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

[2] Weizmann Inst Sci, Chem Res Support Unit, IL-76100 Rehovot, Israel

[3] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

来源：

ADVANCED MATERIALS | 2003年 / 15卷 / 24期

关键词：

D O I：

10.1002/adma.200305549

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanocrystalline, nominally undoped films of CeO2-x undergo large (0.8-2 %) lateral expansion after local substrate removal and formation of freestanding membranes (see Figure). The structural, optical, and electrical properties are consistent with the hypothesis that substrate removal triggers disordering of oxygen vacancies leading to this expansion, which occurs irrespective of whether tensile or compressive stress existed in the films.

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页码：2077 / +

页数：6

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