On quadruple-defect formation in C15 laves phases

被引：0
作者：
Modder, IW
Bakker, H
机构：
[1] Van der Waals-Zeeman Institute, University of Amsterdam, NL-1018 XE Amsterdam
来源：
PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1997年 / 199卷 / 02期
关键词：
D O I：
10.1002/1521-3951(199702)199:2<369::AID-PSSB369>3.0.CO;2-E
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Arguments are given in favour of quadruple-defect formation in some Laves phases AB(2) with the C15 (MgCu2) structure. Such a defect consists of three vacancies on the B sublattice combined with one anti-structure B atom. Using the Ising model and applying the Bra,ag-Williams approximation, equations are derived for quadruple-defect content and vapour pressures as function of temperature. Possible experiments for measuring these quantities are suggested. On the basis of simplified equations some consequences are elucidated.
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页码：369 / 378
页数：10
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