Structure and Magnetic Properties of Ni-doped ZnO Powder

武汉理工大学学报-材料科学版(英文版), 2010, 25(5): 770-773. doi: 10.1007/s11595-010-0089-9

^1, , ^2, , ^3,

1.Department of Electronic Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China

2.Department of Electronic Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China

3.School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhnn 430074,China

Structure and Magnetic Properties of Ni-doped ZnO Powder

GAO Fang ^1, , ZHAO Jun ^2, , WU Kangbing ^3,

1.Department of Electronic Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China

2.Department of Electronic Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China

3.School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhnn 430074,China

Keywords： ferromagnetism

Ni-doped ZnO nanopowder (Zn0.98Ni0.2O) was synthesized by improved coprecipitation method.The average particle size of the powder was estimated to be 50 nm.The powder was then processed by thermal treatment.Samples were annealed at 1 073,1 273,and 1 473 K,respectively.The solubility of NiO in ZnO and the lattice parameters of ZnO both increased with the temperature.The magnetic property of the doped samples was examined,and hysteresis loops were got.The results showed all the samples were ferromagnetic,while powder processed at 1 273 K for 4 h got a highest saturation magnetization (Ms) of 0.0457 emu/g.Also,magnetic properties were related to the grain size of the powder.

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Structure and Magnetic Properties of Ni-doped ZnO Powder

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