Monovacancies and divacancies in copper -: Reanalysis of experimental data

被引：36

作者：

Neumann, G

Tölle, V

Tuijn, C

机构：

[1] Univ Amsterdam, Dept Phys, NL-1018 XE Amsterdam, Netherlands

[2] Free Univ Berlin, Inst Phys Chem, D-14195 Berlin, Germany

来源：

PHYSICA B | 1999年 / 271卷 / 1-4期

关键词：

vacancies; monovacancies; divacancies; copper;

D O I：

10.1016/S0921-4526(99)00209-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The vacancy concentrations c(v) in copper measured by means of the absolute technique (Hehenkamp et al., Phys. Rev. B 45 (1992) 1998) and those derived from positron lifetime studies (Kluin, Philos. Mag A 65 (1992) 1263) are reanalysed. Taking into account the results of quenching and annealing investigations the best fit to the temperature function of c(v), is described by H-1v(F) = 1.03 eV and S-1v(F)/k = 1.1 for the monovacancy formation enthalpy and enthropy and a divacancy binding enthalpy and entropy of H-2v(B) = - 0.23 eV (attractive interaction) and S-2v(B)/k = 2.8, respectively. Accordingly, the divacancy concentration amounts to 1.5 x 10(-4) at the melting temperature. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：21 / 27

页数：7

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