Electron spin resonance study of CuGa1-xMnxSe2 magnetic semiconducting compounds

被引：1

作者：

Fermin, Jose R. ^{[1
]}

Nava, Alexander ^{[1
]}

Durante-Rincon, C. A. ^{[1
]}

Castro, Jaime ^{[1
]}

Silva, Pedro J. ^{[2
]}

机构：

[1] Univ Zulia, Dept Fis, Fac Ciencias, Maracaibo 4001, Zulia, Venezuela

[2] Inst Venezolano Invest Cient, Ctr Fis, Lab Fis Mat Condensada, Caracas 1020A, Venezuela

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 327卷

关键词：

Spin resonance; Resonance linewidth; Diluted magnetic semiconductors; CuGaMnSe; PARAMAGNETIC-RESONANCE; CD1-XMNXTE; CUGASE2; EPR; RES;

D O I：

10.1016/j.jmmm.2012.09.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the magnetic properties of the diluted magnetic semiconductor CuGa1-xMnxSe2. For this, Electron spin resonance (ESR) experiments in the temperature range 70 K < T < 300 K, were performed. The samples were synthesized by direct fusion of stoichiometric mixtures of the elements, with Mn composition from x = 0.0 to 0.25. The ESR integral intensity, resonance field, and linewidth, have been measured as functions of temperature and Mn concentration. We identify a paramagnetic phase above a critical temperature of the order of 250-260 K. Below this temperature, the spin system reorders into certain magnetic phase not well identified. The inclusion of Mn induces local fields that increase the resonance field, with resulting g-values less than 2.0. The behavior of the ESR linewidth is similar to that observed in II-Mn-VI alloys, and can be described by the modified Huber equation. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：79 / 81

页数：3

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