溶胶-凝胶法制备镍锌铁氧体及其电磁损耗性能  

Synthesis of Ni-Zn Ferrite by Sol-Gel Method and Its Electromagnetic Loss Property

作　　者：刘树信[1] 王海滨[1] 罗娟[1] 霍冀川[2] 姚晓霞[1] 

机构地区：[1]绵阳师范学院化学与化学工程学院,四川绵阳621000 [2]西南科技大学材料科学与工程学院,四川绵阳621000

出　　处：《过程工程学报》2009年第6期1227-1231,共5页The Chinese Journal of Process Engineering

基　　金：四川省科技厅资助项目(编号:2006J13-034);四川省教育厅资助项目(编号:2006A139)

摘　　要：以Zn(NO3)2·6H2O,Ni(NO3)2·6H2O,Fe(NO3)3·9H2O及柠檬酸为原料,采用溶胶-凝胶法制备前驱体,在1200℃下对其煅烧3h,合成了NixZn1-xFe2O4(x=0,0.3,0.5,0.7)铁氧体.产品表征结果表明,所有NixZn1-xFe2O4均属立方晶系尖晶石结构,结晶完整,在580cm-1附近均具有铁氧体的红外吸收特征峰,晶粒大小均在100nm左右.在0.2～1.8GHz测试频率范围内,Ni0.7Zn0.3Fe2O4和Ni0.5Zn0.5Fe2O4铁氧体对电磁波的吸收损耗性能相对较好,Ni0.7Zn0.3Fe2O4的电磁损耗角正切值tgδ为0.67～1.59,Ni0.5Zn0.5Fe2O4为0.37～1.51,随Ni含量增加,其电磁损耗逐渐增强.NixZn1-xFe2O4 ferrite was synthesized by sol-gel method with Zn（NO3）2·6H2O, Ni（NO3）2·6H2O and Fe（NO3）3·9H2O and C6H8O7·H2Oas raw materials. The product was characterized and analyzed. The results indicated that all the products were single phase of cubic crystal system spinel structure ferrite and all the crystals were crystallized with good integrality. The size of particles was about 100 nm. Electromagnetic loss property of the sample was tested. The results indicated that Ni0.7Zn0.3Fe2O4 and Ni0.5Zn0.5Fe2O4 had a better magnetic loss property than Zn2Fe2O4 and Ni0.3Zn0.7Fe2O4 in 0.2-1.8 GHz. The tgδ of Ni0.7Zn0.3Fe2O4 was 0.67-1.59, and that of Ni0.5Zn0.5Fe2O4 0.37-1.51. The electromagnetic loss ofNi-Zn ferrite increased with the increase of Ni content.

关 键 词：镍锌铁氧体 溶胶-凝胶法 电磁损耗 制备 

分 类 号：TM227[一般工业技术—材料科学与工程] TB34[电气工程—电工理论与新技术]