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Absence of ferromagnetism in bulk polycrystalline Zn0.9Co0.1O
Yin, S; Xu, MX; Yang, 刘涛; Hu TD(胡天斗); L; Liu, JF; Rosner, H; Hahn, H; Gleiter, H; Schild, D; Doyle, S; Liu, T; Hu, TD; Takayama-Muromachi, E; Jiang, JZ
2006
发表期刊PHYSICAL REVIEW B
卷号73期号:22页码:224408
通讯作者Zhejiang Univ, Dept Mat Sci & Engn, Lab New Structured Mat, Hangzhou 310027, Peoples R China ; Natl Inst Mat Sci, Superconducting Mat Ctr, New Mat Grp, Tsukuba, Ibaraki 3050044, Japan ; Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany ; Forschungszentrum Karlsruhe, Inst Nucl Waste Disposal, D-76021 Karlsruhe, Germany ; Forschungszentrum Karlsruhe, Inst Solid State Phys, D-76021 Karlsruhe, Germany ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
摘要The atomic structure and the magnetic properties of 5 and 10 at. % Co-doped ZnO samples prepared by a high-pressure and high-temperature method have been investigated by various techniques, including x-ray diffraction with Rietveld refinements, scanning electron microscopy, high-resolution transmission electron microscopy, nanometer-sized element mapping, x-ray photoelectron spectroscopy, near-edge x-ray absorption fine structure, and extended x-ray absorption fine structure and magnetization measurements. It is found that Co ions with a valence of 2+ substitute Zn ions in the wurtzite ZnO structure. No metallic or oxidic Co-rich clusters were detected in the samples. If Co2+ ions substitute Zn2+ ions, no intrinsic ferromagnetism is observed in ZnO at doping levels up to 10 at. % Co even down to 5 K. A paramagnetic behavior with partially antiferromagnetic interactions is observed. Thus, in bulk Co-doped ZnO system any observation of ferromagnetism is probably due to small clusters of second phase materials. However, in thin films the situation might be more complex, since other extrinsic influences, such as strain or proximity effects, may modify the electronic and magnetic properties.
学科领域Physics
研究领域[WOS]Physics ; Physics
DOI10.1103/PhysRevB.73.224408
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语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Condensed Matter
WOS记录号WOS:000238696300054
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被引频次:102[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/241038
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Yin, S,Xu, MX,Yang, 刘涛,et al. Absence of ferromagnetism in bulk polycrystalline Zn0.9Co0.1O[J]. PHYSICAL REVIEW B,2006,73(22):224408.
APA Yin, S.,Xu, MX.,Yang, 刘涛.,胡天斗.,L.,...&Jiang, JZ.(2006).Absence of ferromagnetism in bulk polycrystalline Zn0.9Co0.1O.PHYSICAL REVIEW B,73(22),224408.
MLA Yin, S,et al."Absence of ferromagnetism in bulk polycrystalline Zn0.9Co0.1O".PHYSICAL REVIEW B 73.22(2006):224408.
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