掺杂SiO_2的低温烧结Ba_3(Co_(0.4)Zn_(0.6))_2Fe_(24)O_(41) Z型六角铁氧体材料  

Low-temperature Sintered Ba_3(Co_(0.4)Zn_(0.6))_2Fe_(24)O_(41) Z-type Hexagonal Ferrite with SiO_2 Additive

作　　者：罗俊[1] 陈世钗[1] 况佳[1] 贾利军[1] 张怀武[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,四川成都610054

出　　处：《磁性材料及器件》2009年第1期41-43,54,共4页Journal of Magnetic Materials and Devices

基　　金：国家自然科学杰出青年基金资助项目(60425102);科技部国际合作项目(2006DFA53410)

摘　　要：为了改善低温烧结Z型六角铁氧体Ba3(Co0.4Zn0.6)2Fe24O41材料的电磁性能,向体系中引入了SiO2,研究了掺杂SiO2对此材料在低温烧结时的显微结构和高频电磁性能的影响。发现SiO2的加入减小了晶粒的尺寸,使得其起始磁导率降低,但与此同时,SiO2的引入能够降低该体系在高频时的介电常数并提高其品质因数。In order to improve the high-frequency electromagnetic performance of low-temperature sintered Ba3（Co0.4Zn0.6）2Fe24O41 Z-type hexagonal ferrite, SiO2 has been selected as additive to be introduced into this system. The influence of SiO2 additive on the microstructures as well as high-frequency properties of the ceramics sintered at low-temperature was investigated. It was found that the ceramic grain growth was suppressed by SiO2, which results in a decrease in initial permeability. However, the addition of SiO2 could decrease the dielectric constant and increase the quality factor at higher frequency.

关 键 词：Z型六角铁氧体 SiO2掺杂 低温烧结 微结构 电磁性能 

分 类 号：TM277.2[一般工业技术—材料科学与工程]