Zn含量对NiCuZn旋磁铁氧体的显微结构、磁性能和介电性能的影响  

Influence of Zn Contents on Microstructure,Magnetic Properties and Dielectric Properties of NiCuZn Gyromagnetic Ferrites

作　　者：陈玲珑[1] 杨艳[2] 余忠[1] 蒋晓娜[1] 孙科[1] 兰中文[1] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,成都610054 [2]成都工业学院通信工程系,成都611730

出　　处：《人工晶体学报》2015年第8期2101-2105,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51472045)

摘　　要：采用氧化物陶瓷工艺制备了Ni0.6533-xCu0.1005Zn0.2613＋xFe1.9899O4（x=0,0.0402,0.0804,0.1206）微波铁氧体,研究了不同Zn含量对NiCuZn铁氧体的显微结构、磁性能和介电性能的影响。结果表明：ZnO具有明显的助熔作用,NiCuZn铁氧体的平均晶粒尺寸与饱和磁化强度随着Zn含量的增多逐渐增大,而矫顽力和居里温度则逐渐减小。样品的剩余磁感应强度随着温度的升高而不断降低,且Zn含量越多,其下降速率越大。当x=0.0804时,室温下NiCuZn铁氧体具有最高的剩余磁感应强度356mT,且其温度稳定性也较好。此外,x在0~0.1206范围内,铁氧体的电阻率、介电常数和介电损耗角正切变化不大。NiCuZn microwave ferrites with the formula Ni0. 6533- xCu0. 1005Zn0. 2613 ＋ xFe1. 9899O4（ x = 0,0.0402,0. 0804,0. 1206） were prepared by oxide process. The influence of Zn contents on microstructure,magnetic properties and microwave dielectric properties of Ni Cu Zn microwave ferrites was investigated.The results reveal that ZnO has obvious fluxing action. The average grain size and saturation magnetization increases as Zn contents increasing,but the coercivity and Curie temperature show a contrary trend. Moreover,residual magnetism（ Br） of the samples constantly decreases with the increase of temperature at the same formula condition,and the more Zn contents,the greater the decline rate of Br. When x = 0. 0804,the Brof Ni Cu Zn ferrite reaches a maximum value 356 m T at room temperature,and the stability of temperature is good. In addition,with x in the range of 0-0. 1206,the resistivity,the dielectric constant and dielectric loss tangent of these samples have little change.

关 键 词：NICUZN铁氧体 磁性能 介电性能 

分 类 号：TM27[一般工业技术—材料科学与工程]