Anomalous Hall effect and origin of magnetism in Zn1-xCoxO thin films at low Co content

被引:17
作者
Peng, Y. Z.
Liew, T.
Chong, T. C.
An, C. W.
Song, W. D.
机构
[1] Data Storage Inst, Singapore 117608, Singapore
[2] Natl Univ Singapore, Elect & Comp Engn Dept, Singapore 119260, Singapore
关键词
D O I
10.1063/1.2202140
中图分类号
O59 [应用物理学];
学科分类号
摘要
A small anomalous Hall effect signal of a Zn1-xCoxO (x=0.05) thin film was observed, indicating that there presents sp-d interactions in the Zn1-xCoxO thin film. However, under a self-held setup, we did not obtain observable differences between the M-H curves when the near band electrons were changed. Integrated with our previous results, possible mechanisms for the magnetism of Zn1-xCoxO thin films were proposed based on a picture of spins in a carrier sea. (c) 2006 American Institute of Physics.
引用
收藏
页数:3
相关论文
共 18 条
[1]   Colossal magnetoresistant materials: The key role of phase separation [J].
Dagotto, E ;
Hotta, T ;
Moreo, A .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2001, 344 (1-3) :1-153
[2]   Temperature-dependent magnetization in diluted magnetic semiconductors [J].
Das Sarma, S ;
Hwang, EH ;
Kaminski, A .
PHYSICAL REVIEW B, 2003, 67 (15)
[3]   Zener model description of ferromagnetism in zinc-blende magnetic semiconductors [J].
Dietl, T ;
Ohno, H ;
Matsukura, F ;
Cibert, J ;
Ferrand, D .
SCIENCE, 2000, 287 (5455) :1019-1022
[4]   Exploration of oxide-based diluted magnetic semiconductors toward transparent spintronics [J].
Fukumura, T ;
Yamada, Y ;
Toyosaki, H ;
Hasegawa, T ;
Koinuma, H ;
Kawasaki, M .
APPLIED SURFACE SCIENCE, 2004, 223 (1-3) :62-67
[5]   An oxide-diluted magnetic semiconductor: Mn-doped ZnO [J].
Fukumura, T ;
Jin, ZW ;
Ohtomo, A ;
Koinuma, H ;
Kawasaki, M .
APPLIED PHYSICS LETTERS, 1999, 75 (21) :3366-3368
[6]  
HURD CM, 1972, HALL EFFECT METALS A, pCH1
[7]  
Mydosh J.A., 1993, EXPT INTRO SPIN GLAS
[8]   (Ga,Mn)As: A new diluted magnetic semiconductor based on GaAs [J].
Ohno, H ;
Shen, A ;
Matsukura, F ;
Oiwa, A ;
Endo, A ;
Katsumoto, S ;
Iye, Y .
APPLIED PHYSICS LETTERS, 1996, 69 (03) :363-365
[9]  
Ohno H, 1997, ADV COLLOID INTERFAC, V71-2, P61
[10]   Electric-field control of ferromagnetism [J].
Ohno, H ;
Chiba, D ;
Matsukura, F ;
Omiya, T ;
Abe, E ;
Dietl, T ;
Ohno, Y ;
Ohtani, K .
NATURE, 2000, 408 (6815) :944-946