安徽大学学报（自然科学版）2011，Vol.35Issue(5)：42-45,4.
退火温度对水热合成的纳米晶Ni0.6Zn0.4Fe2O4铁氧体磁性能的影响
Annealing temperature effect on magnetic properties of Ni0.6 Zn0.4Fe2O4 ferrite nano-crystalline via hydrothermal synthesis
摘要
Abstract
Nano-scale NiZn spinel ferrite powder was synthesized at 180 t by hydrothermal synthesis method, and then it was annealed at 600,800 and 1 000 ℃ in air respectively. Its morphology, microstructure and magnetic properties were characterized by X-ray diffraction ( XRD), fourier transform infrared spectroscopy ( FTIR) , scanning transmission electron microscopy (SEM) and vibrating sample magnetometer ( VSM) , respectively. XRD and FTIR spectroscopies show that non-annealing and annealing Ni0.6Zn0.4Fe2O4 ferrite samples all are the single spinel phase. Annealing temperature has little effect on the lattice constant and mainly has influence on the particle size. The saturation magnetization of the samples was improved with the increasing annealing temperature, exhibiting with 58. 75 emu/g at 1 000 t. As compared to the non-annealing powders, the coercive force of the samples firstly increased with the increasing annealing temperature, then decreased as the annealing temperature increased, the coercive force of the samples mainly depended on its microstructure.关键词
镍锌铁氧体/水热法/退火温度/磁性能Key words
NiZn ferrite/ hydrothermal method/ annealing temperature/ magnetic properties分类
数理科学引用本文复制引用
谢延玉,汪忠柱,王佩红,金绍维..退火温度对水热合成的纳米晶Ni0.6Zn0.4Fe2O4铁氧体磁性能的影响[J].安徽大学学报（自然科学版）,2011,35(5):42-45,4.基金项目
国家自然科学基金资助项目(51007001) （51007001）
安徽省教育厅自然科学研究基金重点资助项目(KJ2011A011) （KJ2011A011）
