Magnetic properties of Cu2Cd1-zMnzGeSe4 and Cu2Cd1-zFezGeSe4 alloys

被引：7
作者：
Quintero, E. [1 ]
Quintero, M. [1 ]
Moreno, E. [1 ]
Morocoima, M. [1 ]
Grima, P. [1 ]
Bocaranda, P. [1 ]
Henao, J. A. [2 ]
Pinilla, J. [2 ]
机构：
[1] Univ Los Andes, Fac Ciencias, Dept Fis, Ctr Estudios Semicond, Merida 5101, Venezuela
[2] Univ Ind Santander, Escuela Quim, Fac Ciencias, GIQUE, Bucaramanga, Colombia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 471卷 / 1-2期
关键词：
Magnetic semiconductor alloys; Magnetic susceptibility; PHASE-DIAGRAM; SUSCEPTIBILITY; SEMICONDUCTORS; BEHAVIOR; VALUES;
D O I：
10.1016/j.jallcom.2008.03.087
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Measurements of magnetic susceptibility chi have been made as a function of temperature in the range 2-300 K on polycrystalline samples of the Cu2Cd1-zMnzGeSe4 and Cu2Cd1-zFezGeSe4 alloy systems. Values of T-N, the antiferromagnetic Neel temperature, have been obtained from the cusp in the chi vs. T curves. Values of the Curie-Weiss temperature theta and the Curie constant C have been determined from the 1/chi vs. T results. It has been found that, for each system, the orbital moment L is quenched. In the case of the Cu2Cd1-zFezGeSe4 system, an analysis was carried out in terms of a simple mean field theory, and values of exchange interaction parameters were determined from the measured T-N and theta data. (C) 2008 Elsevier B.V. All rights reserved.
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页码：16 / 20
页数：5
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