Magnetization and Raman scattering studies of (Co,Mn) codoped ZnO nanoparticles

被引：92

作者：

Duan, L. B. ^{[1
]}

Rao, G. H. ^{[1
]}

Wang, Y. C. ^{[1
]}

Yu, J. ^{[1
]}

Wang, T. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 104卷 / 01期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2952516

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single-phase (Co,Mn) codoped ZnO nanoparticles were synthesized by an autocombustion method. Hysteresis loop was observed at 300 K for the sample Zn0.98Co0.01Mn0.01O with a low coercivity (40 +/- 5 Oe). Temperature dependence of magnetization rules out the possibility of superparamagnetism or spin-glass behavior. Raman scattering studies manifested that there might exist a defect annihilation arising from the (Co,Mn) codoped into ZnO host lattice. As the ferromagnetism of diluted magnetic semiconductors is closely related to the dopant-defect hybridization, the ferromagnetic ordering was significantly enhanced in the sample Zn0.98Co0.01Mn0.01O by the (Co,Mn) codoping, in comparison to the Zn0.99Co0.01O and Zn0.99Mn0.01O fabricated by the same method. (C) 2008 American Institute of Physics.

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页数：5

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