Paramagnetic regime in Zn 1− x  Mn  x  GeAs 2  diluted magnetic semiconductor | Zendy

Kilanski L. | Zendy; Fedorchenko I. V. | Zendy; Górska M. | Zendy; Dynowska E. | Zendy; Wójcik M. | Zendy; Kowalski B. J. | Zendy; Anderson J. R. | Zendy; Rotundu C. R. | Zendy; Varnavskiy S. A. | Zendy; Dobrowolski W. | Zendy; Marenkin S. F. | Zendy

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Paramagnetic regime in Zn 1− x Mn x GeAs 2 diluted magnetic semiconductor

Author(s) -

Kilanski L.,

Fedorchenko I. V.,

Górska M.,

Dynowska E.,

Wójcik M.,

Kowalski B. J.,

Anderson J. R.,

Rotundu C. R.,

Varnavskiy S. A.,

Dobrowolski W.,

Marenkin S. F.

Publication year - 2011

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.201001101

Subject(s) - paramagnetism , magnetic semiconductor , magnetoresistance , condensed matter physics , magnetization , ion , semiconductor , materials science , curie–weiss law , curie temperature , analytical chemistry (journal) , magnetic field , chemistry , ferromagnetism , physics , optoelectronics , quantum mechanics , organic chemistry , chromatography

The systematic studies of both magnetic and magnetotransport properties of Zn 0.947 Mn 0.053 GeAs 2 diluted magnetic semiconductor are presented. The paramagnetic behaviour of the sample confirms that the solubility of Mn in the studied alloy is of the order of 5 at%. The Curie–Weiss behaviour of magnetic susceptibility is preserved only at low temperatures, T < 100 K indicating the presence of short‐range magnetic interactions in the system due to the presence of groups of Mn counting few ions. The high‐field magnetization together with magnetoresistance data is used to estimate the amount of magnetic ions active in the semiconductor matrix. The obtained results showed that the amount of magnetically active Mn ions in the semiconductors matrix is two orders of magnitude lower than the value obtained from X‐ray fluorescence measurements. The magnetotransport studies revealed that only about 30% of all Mn ions are electrically active in the semiconductor matrix.

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