Enhanced oxygen vacancy aggregation and colloid production in Al2O3

被引：14

作者：

Morono, A ^{[1
]}

Hodgson, ER ^{[1
]}

机构：

[1] EURATOM, CIEMAT, Fus Associat, Madrid 28040, Spain

来源：

JOURNAL OF NUCLEAR MATERIALS | 1997年 / 250卷 / 2-3期

关键词：

D O I：

10.1016/S0022-3115(97)00268-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Optical luminescence and absorption measurements on Al2O3 (sapphire) electron irradiated at temperatures between 200 and 270 degrees C with and without an applied electric field have been used to identify an oxygen vacancy aggregation process leading to the formation of aluminium colloids. This process, which is only observed when an electric field is applied during irradiation, occurs within the volume and is considered as a possible precursor for RIED. The results help to clarify the observed similarity between RIED and colloid production, and help to provide an explanation for the observation of gamma alumina in sapphire which has suffered RIED. (C) 1997 Elsevier Science B.V.

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页码：156 / 163

页数：8

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