Characterization of magnetic components in the diluted magnetic semiconductor Zn1-xCoxO by x-ray magnetic circular dichroism -: art. no. 201201

被引：137

作者：

Kobayashi, M ^{[1
]}

Ishida, Y

Hwang, JI

Mizokawa, T

Fujimori, A

Mamiya, K

Okamoto, J

Takeda, Y

Okane, T

Saitoh, Y

Muramatsu, Y

Tanaka, A

Saeki, H

Tabata, H

Kawai, T

机构：

[1] Univ Tokyo, Dept Phys, Kashiwa, Chiba 2778561, Japan

[2] Univ Tokyo, Dept Complex Sci & Engn, Kashiwa, Chiba 2778561, Japan

[3] Japan Atom Energy Res Inst, Synchrotron Radiat Res Ctr, Mikazuki, Hyogo 6795148, Japan

[4] Hiroshima Univ, Dept Quantum Matter, ADSM, Higashihiroshima 7398530, Japan

[5] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.72.201201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the results of x-ray absorption, x-ray magnetic circular dichroism (XMCD), and photoemission experiments on Zn1-xCoxO (x=0.05) thin film, which shows ferromagnetism at room temperature. The XMCD spectra show multiplet structures, characteristic of the Co2+ ion tetrahedrally coordinated by oxygen, suggesting that the ferromagnetism comes from Co ions substituting the Zn site in ZnO. The magnetic field and temperature dependences of the XMCD spectra imply that the nonferromagnetic Co ions are strongly coupled antiferromagnetically with each other.

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页数：4

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