掺杂对高磁导率低损耗锰锌铁氧体材料磁性能的影响

摘要

Mn-Zn ferrite materials with high initial permeability and low specific loss factor were prepared by the conventional ceramic technology.The effects of Nb2O5 dopant on the magnetic properties were researched.The results showed that Mn-Zn ferrite,which was doped with 0.015wt% Nb2O5,had a good soft magnetic property with the initial permeability μi=13386,the specific temperature factor of initial permeability αμ/μi=-0.6×10-6/K and the specific loss factor tanδ/μi=3.2×10-6.%采用氧化物陶瓷工艺制备了高磁导率低损耗锰锌铁氧体材料,研究了Nb2O5掺杂对材料磁性能的影响。结果表明掺杂0.015%（质量分数）Nb2O5的锰锌铁氧体材料具有较好的磁性能：起始磁导率μi=13386,起始磁导率比温度系数αμ/μi=-0.6×10-6/K,相对损耗因数tanδ/μi=3.2×10-6。