Using of modified trapping model in positron-lifetime study of cold-worked aluminium

被引：0

作者：

Cízek, J ^{[1
]}

Procházka, I ^{[1
]}

Kmjec, T ^{[1
]}

Vostry, P ^{[1
]}

机构：

[1] Charles Univ, Fac Math & Phys, Dept Low Temp Phys, CZ-18000 Prague 8, Czech Republic

来源：

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 2000年 / 180卷 / 02期

关键词：

D O I：

10.1002/1521-396X(200008)180:2<439::AID-PSSA439>3.0.CO;2-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Positron-lifetime (PL) and electrical resistivity studies of polycrystalline aluminium deformed by tensile stress at T = 77 K were performed. It was found that the conventional trapping model (CTM) fails in interpretation of measured PL spectra due to strongly non-uniform spatial distribution of dislocations in the deformed samples. Therefore, a modified trapping model (MTM) was used in this study. Strongly non-uniform dislocation density was directly taken into account in the development of MTM. Comparison of the results obtained by MTM and CTM is given in the present work. Mean cell size in the deformed samples obtained from MTM analyses of PL spectra are compared with those measured by TEM.

引用

页码：439 / 458

页数：20

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