Ferromagnetism in (Zn,Cr)Se layers grown by molecular beam epitaxy

G. Karczewski; M. Sawicki; V. Ivanov; C. Ruester; G. Grabecki; F. Matsukura; L. W. Molenkamp; T. Dietl

Ferromagnetism in (Zn,Cr)Se layers grown by molecular beam epitaxy

G. Karczewski, M. Sawicki, V. Ivanov, C. Ruester, G. Grabecki, F. Matsukura, L. W. Molenkamp, T. Dietl

Research output: Contribution to journal › Article › peer-review

Abstract

Magnetization measurements of MBE grown epilayers of (Zn,Cr)Se with relatively large Cr content of 0.014 and 0.021 are presented. We evidence the presence of a strong ferromagnetic coupling between Cr ions, but also suggest a significant clustering due to a pronounced superparamagnetic behavior found in the layers.We estimate the intraparticle Curie temperature to be about 100 K, which combined with other arguments appears to indicate that some magnetic properties of Cr-rich layers might be dominated by the presence of small grains of A^II-Cr₂-B4^VI spinels.

Original language	English
Pages (from-to)	55-58
Number of pages	4
Journal	Journal of Superconductivity and Novel Magnetism
Volume	16
Issue number	1
Publication status	Published - 2003 Dec 1
Externally published	Yes

Keywords

(Zn,Cr)Se
Diluted magnetic semiconductors
Ferromagnetic semiconductors
Magnetic semiconductors
Spinels

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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abstract = "Magnetization measurements of MBE grown epilayers of (Zn,Cr)Se with relatively large Cr content of 0.014 and 0.021 are presented. We evidence the presence of a strong ferromagnetic coupling between Cr ions, but also suggest a significant clustering due to a pronounced superparamagnetic behavior found in the layers.We estimate the intraparticle Curie temperature to be about 100 K, which combined with other arguments appears to indicate that some magnetic properties of Cr-rich layers might be dominated by the presence of small grains of AII-Cr2-B4VI spinels.",

keywords = "(Zn,Cr)Se, Diluted magnetic semiconductors, Ferromagnetic semiconductors, Magnetic semiconductors, Spinels",

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T1 - Ferromagnetism in (Zn,Cr)Se layers grown by molecular beam epitaxy

AU - Karczewski, G.

AU - Sawicki, M.

AU - Ivanov, V.

AU - Ruester, C.

AU - Grabecki, G.

AU - Matsukura, F.

AU - Molenkamp, L. W.

AU - Dietl, T.

PY - 2003/12/1

Y1 - 2003/12/1

N2 - Magnetization measurements of MBE grown epilayers of (Zn,Cr)Se with relatively large Cr content of 0.014 and 0.021 are presented. We evidence the presence of a strong ferromagnetic coupling between Cr ions, but also suggest a significant clustering due to a pronounced superparamagnetic behavior found in the layers.We estimate the intraparticle Curie temperature to be about 100 K, which combined with other arguments appears to indicate that some magnetic properties of Cr-rich layers might be dominated by the presence of small grains of AII-Cr2-B4VI spinels.

AB - Magnetization measurements of MBE grown epilayers of (Zn,Cr)Se with relatively large Cr content of 0.014 and 0.021 are presented. We evidence the presence of a strong ferromagnetic coupling between Cr ions, but also suggest a significant clustering due to a pronounced superparamagnetic behavior found in the layers.We estimate the intraparticle Curie temperature to be about 100 K, which combined with other arguments appears to indicate that some magnetic properties of Cr-rich layers might be dominated by the presence of small grains of AII-Cr2-B4VI spinels.

KW - (Zn,Cr)Se

KW - Diluted magnetic semiconductors

KW - Ferromagnetic semiconductors

KW - Magnetic semiconductors

KW - Spinels

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Ferromagnetism in (Zn,Cr)Se layers grown by molecular beam epitaxy

Abstract

Keywords

ASJC Scopus subject areas

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