$Zn_{1-x}(Mn,Co)_xGeAs_2$ Ferromagnetic Semiconductor: Magnetic and Transport Properties

L. Kilanski; M. Gorska; V. Domukhovski; W. Dobrowolski; J. Anderson; C. Rotundu; S. Varniavskii; S. Marenkin

ArticleOriginal scientific text

Title

$Z n_{1 - x} {(M n, C o)}_{x} G e A s_{2}$ Ferromagnetic Semiconductor: Magnetic and Transport Properties

Authors ¹, ¹, ¹, ¹, ²,

Affiliations

Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
Department of Physics & Center for Nanophysics and Advanced Materials, University of Maryland, College Park, MD 20742, USA
Kurnakov Institute of General and Inorganic Chemistry RAS, 119991 Moscow, Russia

Abstract

We present the studies of magnetic and transport properties of the bulk

Z n_{1 - x} {(M n, C o)}_{x} G e A s_{2}

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} c m^{- 3}

, was composition dependent.

Keywords

ENG

72.20.Fr, 72.80.Ga, 75.50.Pp, 75.40.Cx

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Title

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

Affiliations

Abstract

Keywords

Bibliography

$Z n_{1 - x} {(M n, C o)}_{x} G e A s_{2}$ Ferromagnetic Semiconductor: Magnetic and Transport Properties