Room-temperature ferromagnetism in Mn-doped CdGeAs2 chalcopyrite

被引：30

作者：

Demin, R

Koroleva, L ^{[1
]}

Marenkin, S

Mikhailov, S

Aminov, T

Szymczak, H

Szymczak, R

Baran, M

机构：

[1] Moscow MV Lomonosov State Univ, Moscow 119992, Russia

[2] NS Kurnakov Gen & Inorgan Chem Inst, Moscow 119991, Russia

[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 290卷

关键词：

diluted magnetic semiconductors; cooling-magnetic; ferromagnetic materials; superparamagnetism; resistivity-temperature dependent;

D O I：

10.1016/j.jmmm.2004.11.442

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ferromagnetism is found in the CdGeAs2 chalcopyrite doped by Mn. The Curie point of these materials achieves 355K that is the highest one in A(II)B(IV)C(2)(v):Mn systems. These systems are heterogeneous magnets and they consist of ferromagnetic and superparamagnetic phases. The volume of the first phase increases with a level of doping. An origin of ferromagnetism in CdGeAs2:Mn can be related to the existence of vacancies in (Cd, V-C, Mn) GeAs2 or nonstoichiometry of (Cd, Ge, Mn) GeAs2. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：1379 / 1382

页数：4

共 12 条

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