Zn1-x(Mn,Co)xGeAs2 Ferromagnetic Semiconductor: Magnetic and Transport Properties

被引：13

作者：

Kilanski, L. ^{[1
]}

Gorska, M. ^{[1
]}

Domukhovski, V. ^{[1
]}

Dobrowolski, W. ^{[1
]}

Anderson, J. R. ^{[2
,3
]}

Rotundu, C. R. ^{[2
,3
]}

Varniavskii, S. A. ^{[4
]}

Marenkin, S. F. ^{[4
]}

机构：

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

[2] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[3] Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USA

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

来源：

ACTA PHYSICA POLONICA A | 2008年 / 114卷 / 05期

关键词：

D O I：

10.12693/APhysPolA.114.1151

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the studies of magnetic and transport properties of the bulk Zn1-x(Mn,Co)(x)GeAs2 mixed crystals with 0.052 <= x <= 0.182 grown using direct fusion method. Magnetic investigations showed that for samples with x >= 0.078 we observed a behavior typical of ferromagnets, with the Curie temperatures T-C >= 300 K. The observed ferromagnetism was probably connected with the spinodal decomposition of the Mn ions in the alloy. The transport studies including resistivity and Hall effect (at B = 1.4 T) were performed. The samples showed p-type conductivity with semiconducting or metallic character, depending on the alloy composition. The Hall carrier concentration, p >= 10(18) cm(-3), was composition dependent.

引用

页码：1151 / 1157

页数：7

共 12 条

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