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

被引：0
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作者：
Duan, L.B. [1 ]
Rao, G.H. [1 ]
Wang, Y.C. [1 ]
Yu, J. [1 ]
Wang, T. [1 ]
机构：
[1] Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
来源：
Journal of Applied Physics | 2008年 / 104卷 / 01期
关键词：
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 (405 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 Zn 0.98Co0.01Mn0.01O by the (Co; Mn); codoping; in comparison to the Zn0.99Co0.01O and Zn 0.99Co0.01O fabricated by the same method. © 2008 American Institute of Physics;
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