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采用固相反应法合成了(1-x)CaTiO3/xNi0.5Zn0.5Fe2O4(0≤x≤1.0)复合材料,并研究了复合材料的物相、微观结构、介电性能和磁性能。结果表明:样品中仅含有钙钛矿型CaTiO3和尖晶石型Ni0.5Zn0.5Fe2O4。1260℃保温3h,样品相对密度达到98.91%,颗粒尺寸约为2μm。样品介电常数随Ni0.5Zn0.5Fe2O4含量(x)增加而增大。当x=0.7、测试频率为103 Hz时,样品介电常数(εr)和介电损耗(tanδ)分别为2629.18和1.74。(1-x)CaTiO3/xNi0.5Zn0.5Fe2O4复合材料显示磁性。其中x=0.7时,样品饱和磁化强度(Ms)达到49.07A·m2/kg;这归因于Ni0.5Zn0.5Fe2O4具有优异的磁性能。
The (1-x) CaTiO3 / xNi0.5Zn0.5Fe2O4 (0≤x≤1.0) composites were synthesized by solid-state reaction and the phase, microstructure, dielectric properties and magnetic properties of the composites were investigated. The results show that the sample contains only perovskite type CaTiO3 and spinel type Ni0.5Zn0.5Fe2O4.1260 ℃ for 3h, the relative density of the sample reaches 98.91% and the particle size is about 2μm. The dielectric constant increases with increasing Ni0.5Zn0.5Fe2O4 content (x). The sample dielectric constant (εr) and dielectric loss (tanδ) are 2629.18 and 1.74 for x = 0.7 and 103 Hz respectively. (1-x) CaTiO3 / xNi0.5Zn0.5Fe2O4 composites show magnetism. The saturation magnetization (Ms) of sample reaches 49.07A · m2 / kg when x = 0.7, which is due to the excellent magnetic properties of Ni0.5Zn0.5Fe2O4.