X-ray study of the structure and magnetic properties of ZnO:(Co, Mn) powders

作者：Yang J H^*; Zhao L Y; Zhang Y J; Wang Y X; Liu H L

来源：Journal of Alloys and Compounds, 2009, 473(1-2): 543-545.

DOI：10.1016/j.jallcom.2008.06.030

• Semiconductors
• Sol-gel processes
• Magnetization

Mn- and Co-doped ZnO powders were prepared by sol-gel method. The XRD peak position shifts regularly with the magnetic-ions concentration of the samples. Magnetism analyzing indicates that Zn(1-x)Mn(x)O is paramagnetic at room temperature, and at low temperature the exchange interaction between Mn ions is antiferromagnetic. Co-doped ZnO is also paramagnetic at room temperature. Ferromagnetic behavior can be found in Zn(1-x)Co(x)O at low temperature (T(c) approximate to 150 K), but the saturation magnetization is only about 0.1 mu(B)/Co, indicating only a fraction of Co ions participate in ferromagnetism and the rest may contribute to the observed paramagnetic signal or even be antiferromagnetic coupled.

• 出版日期2009-4-3
• 单位吉林师范大学