Spinodal Decomposition of Magnetic Ions in Eu-Codoped Ge_{1-x}Cr_{x}Te

• Authors: A. Podgórni , L. Kilanski , W. Dobrowolski , M. Górska , A. Reszka , V. Domukhovski , B. Kowalski , B. Brodowska , J. Anderson , N. Butch , V. Slynko , E. Slynko
• Languages of publication: EN

Abstracts

EN

We present the experimental evidence for the presence of spinodal decomposition of the magnetic ions in the Ge_{1-x-y}Cr_{x}Eu_{y}Te samples with chemical composition varying in the range of 0.015 ≤ x ≤ 0.057 and 0.003 ≤ y ≤ 0.042. The ferromagnetic transition at temperatures 50 ≤ T ≤ 57 K was observed, independent of the chemical composition. The long-range carrier mediated itinerant magnetic interactions seem to be responsible for the observed ferromagnetic order. The magnetic irreversibility with coercive field H_C = 5 - 63 mT and the saturation magnetization M_S ≈ 2 - 6 emu/g are found to strongly depend on the chemical composition of the alloy.

Keywords

EN

72.80.Ga; 75.40.Cx; 75.40.Mg; 75.50.Pp

Discipline

• 75.40.Mg: Numerical simulation studies
• 75.40.Cx: Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
• 72.80.Ga: Transition-metal compounds
• 75.50.Pp: Magnetic semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 122
• Issue: 6
• Pages: 1012-1015

Dates

published

2012-12

Contributors

author

A. Podgórni

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

L. Kilanski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

W. Dobrowolski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

M. Górska

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

A. Reszka

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

V. Domukhovski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

B. Kowalski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

B. Brodowska

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

J. Anderson

• Department of Physics and Center for Nanophysics and Advanced Materials, University of Maryland, College Park, MD 20742, USA

author

N. Butch

• Department of Physics and Center for Nanophysics and Advanced Materials, University of Maryland, College Park, MD 20742, USA

author

V. Slynko

• Institute of Materials Science Problems, Ukrainian Academy of Sciences, 5 Wilde Str., 274001 Chernovtsy, Ukraine

author

E. Slynko

• Institute of Materials Science Problems, Ukrainian Academy of Sciences, 5 Wilde Str., 274001 Chernovtsy, Ukraine

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Identifiers

DOI

10.12693/APhysPolA.122.1012