A new theoretical approach to the Fe1-qAlq in the bcc lattice by employing effective field theory

被引：10

作者：

Freitas, A. S. ^{[1
]}

de Albuquerque, D. F. ^{[2
]}

Moreno, N. O. ^{[1
]}

机构：

[1] Univ Fed Sergipe, Dept Fis, BR-49100000 Sao Cristovao, SE, Brazil

[2] Univ Fed Sergipe, Dept Matemat, BR-49100000 Sao Cristovao, SE, Brazil

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2012年 / 391卷 / 24期

关键词：

FeAl alloys; Effective field; Ising model; FE-AL ALLOYS; ISING-MODEL; MAGNETIC-PROPERTIES; DISORDERED ALLOYS; PHASE-DIAGRAM; MOSSBAUER; BEHAVIOR;

D O I：

10.1016/j.physa.2012.06.068

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this work, a study on a site diluted Ising model system is applied to the magnetic properties of the bcc disordered phase of FeAl alloys by employing effective field theory. Here, one suggests a new approach to exchange interaction between nearest neighbors of Fe that depends on the powers of the Al (q) instead of the linear dependence proposed in other papers. With this, we find an excellent agreement for the description of experimental data and the phase diagram in the T - q plane, in particular, the region with anomalous behavior of the alloy concerned. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：6332 / 6336

页数：5

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