Abstract
Low-temperature fired ferrites or ceramics are usually processed by using low-melting materials(e.g.,glasses,oxides,and eutectics)as sintering aids to obtain compact and uniform microstructures.Herein,a dual-strategy of co-doping with V2O5 and Sb2O3 oxides and forming a eutectic liquid phase has been employed to reduce the melting point of LiZn ferrite ceramics in an effective way.The results indi-cate that miniscule amounts of V2O5 and Sb2O3 co-doping contribute in producing dense and uniform microstructures with enhanced magnetic performance by low-temperature firing.The phase structural and microstructural evolutions have been studied in detail.Thereafter their correlations with magnetic properties have been revealed.Enhanced magnetic performance(Bs=475.4 mT,Ms=82.51 emu/g,Br/Bs=0.85,Hc=2.2 Oe,△H=153.8 Oe)of the LiZn-based ferrite ceramics is achieved by optimized composition and microstructure,which shows great potential for microwave applications including phase shifters and radars.More importantly,such a co-doping strategy can be also extended to other material systems,like dielectric ceramics,hexagonal ferrites or piezoelectric ceramics.
基金项目
Col-lege of Materials Science and Engineering,Sichuan University()
Double First-Rate of China,the National Natural Science Foun-dation of China(61734002)
Fundamental Research Funds for Central Universities(20826041D4125)
Sichuan Science and Technology Program(2020JDR0016)
Sichuan Science and Technology Program(2020ZDZX0008)
NETL
NSTL
万方数据