Low-fired Y-type hexagonal ferrite for hyper frequency applications  

作　　者：Yang BAI Wenjie ZHANG Lijie QIAO Ji ZHOU 

机构地区：[1]Key Laboratory of Environmental Fracture(Ministry of Education),University of Science and Technology Beijing,Beijing 100083,China [2]State Key Lab of New Ceramics and Fine Processing,Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Journal of Advanced Ceramics》2012年第2期100-109,共10页先进陶瓷（英文）

基　　金：the National Natural Science Foundation of China(No.51172020);the Fundamental Research Funds for the Central Universities(No.FRF-TP-09-028A).

摘　　要：Y-type hexagonal ferrite with planar magnetocrystalline anisotropy has ultrahigh cut-off frequency up to GHz and excellent magnetic properties in hyper frequency range,so that is regarded as the most suitable material in correpongding inductive devices and components.The technology of low temperature cofired ceramics for surface-mounted multilayer chip components needs ferrite to be sintered well under 900℃to avoid the melting and diffusion of Ag inner electrode during the cofiring process.To lower the sintering temperature of Y-type hexagonal ferrite,there are several methods,(1)using nano-sized starting powders,(2)substitution by low-melting elements,(3)adding sintering additives,and(4)introducing lattice defect.In this paper,the effects of different methods on the sintering behavior and the magnetic properties were discussed in detail.

关 键 词：hexagonal ferrite magnetic material low temperature cofiring ceramics 

分 类 号：TG1[金属学及工艺—金属学]