Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1595647 | Solid State Communications | 2008 | 4 Pages |
Abstract
Zn1âxCoxO (x=0-0.04) nanoparticles were synthesized by an auto-combustion method. X-ray diffraction and Raman scattering studies confirmed the incorporation of Co into the ZnO lattice. Hysteresis loops were observed at 300Â K in the samples with x=0.01-0.04, and the coercivity decreased with increasing Co content x. Temperature dependence of magnetization showed a usual steep upturn for transition metals doped ZnO at low temperature, however a simultaneous rapid decrease of coercivity below 50Â K was observed in this work. Both of the features could be associated with the localization and the low density of the carriers at low temperature.
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Authors
L.B. Duan, G.H. Rao, J. Yu, Y.C. Wang,