Role of valence-band Co 3d states on ferromagnetism in Zn1-xCoxO nanorods

被引：18

作者：

Chiou, J. W.

Tsai, H. M.

Pao, C. W.

Kumar, K. P. Krishna

Chen, J. H.

Ling, D. C.

Chien, F. Z.

Pong, W. F. ^{[1
]}

Tsai, M. -H.

Wu, J. J.

Yang, M. -H.

Liu, S. C.

Hong, I. -H.

Chen, C. -H.

Lin, H. -J.

Lee, J. F.

机构：

[1] Tamkang Univ, Dept Phys, Tamsui 251, Taiwan

[2] Natl Sun Yat Sen Univ, Dept Phys, Kaohsiung 804, Taiwan

[3] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan

[4] Natl Synchrotron Radiat Res Ctr, Hsinchu 300, Taiwan

[5] Natl Chiayi Univ, Dept Appl Phys, Chiayi, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 06期

关键词：

D O I：

10.1063/1.2432234

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This work investigates the electronic and ferromagnetic properties of Zn1-xCoxO nanorods using x-ray absorption, x-ray magnetic circular dichroism, and scanning photoelectron microscopy methods. The magnetic moment of Co ions in Zn1-xCoxO nanorods is found greatly reduced relative to that of the Co metal. The intensities of valence-band features near the valence-band maximum/Fermi level (E-F) of ferromagnetic nanorods are substantially larger than those of weaker ferromagnetic nanorods, suggesting that the occupation of near-E-F valence-band Co 3d states is important in determining the ferromagnetic behavior in Zn1-xCoxO nanorods. (c) 2007 American Institute of Physics.

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页数：3

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