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

研究成果: Article › 査読

抄録

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.

本文言語	English
ページ（範囲）	55-58
ページ数	4
ジャーナル	Journal of Superconductivity and Novel Magnetism
巻	16
号	1
出版ステータス	Published - 2003 12月 1
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学

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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.",

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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

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