Role of Valence-Band Co 3d States on Ferromagnetism in Zn1-xCoxO Nanorods

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Title:	Role of Valence-Band Co 3d States on Ferromagnetism in Zn1-xCoxO Nanorods
Authors:	Choiu, J.W.;Tsai, H. M.;Pao, C. W.;K. P. Krishna Kumar;Chen, C.H.;Ling, D. C.;Chien, F. Z.;Pong, W. F.;Tsai, M.-H.;Wu, J. J.;Tsai, M-H.;Yang, S. C.;Liu, I.-H.;Hong, C. H.;Chen, H. J.;Lee, J. F.
Contributors:	淡江大學物理學系
Date:	2007-02-05
Issue Date:	2013-01-15 18:26:43 (UTC+8)
Publisher:	College Park: American Institute of Physics
Abstract:	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 EF of ferromagnetic nanorods are substantially larger than those of weaker ferromagnetic nanorods, suggesting that the occupation of near-EF valence-band Co 3d states is important in determining the ferromagnetic behavior in Zn1−xCoxO nanorods.
Relation:	Applied Physics Letters 90(6), 062103(3pages)
DOI:	10.1063/1.2432234
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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