采用氧化物法陶瓷工艺，在缺铁配方的基础上，制备不同Bi2O3掺量的Li0．45Ni0．2Ti0．1Fe2．25O4（δ=0．06）铁氧体样品。结果表明，添加Bi2O3没有在锂铁氧体中形成杂相，烧结后陶瓷样品物相组成单一，结晶状况良好；适量的Bi2O3能有效改善材料微观形貌，促进锂铁氧体的烧结致密化，有助于提高材料的饱和磁化强度47cM。和剩磁比R，降低矫顽力Hc。Bi2O3掺量为1．5％（质量分数）的样品具有较好的综合性能，表观密度d为4．72g／cm^3，饱和磁化强度4πM。为2．3T，剩磁比R为0．853，矫顽力Hc为2．3×10^2A／m。
Ferrites of Li0.45 Ni0.2 Ti0.1 Fe2.25-δO4, doped with different Bi2O3 contents on the basis of iron deficiency content 8 at 0.06, were fabricated by oxide ceramic processing. Result shows that Li-ferrite doped with Bi2O3 exhibits a single phase with pure spinal structure and are crystallized well. Appropriate content of Bi2 Oa helped to improve mierostructure which contributed to increasing saturation magnetizations and remanenee ratios and decreasing coercivety. Ferrite with the doping content at 1.5wt% shows well combination property with apparent densities d at 4.72g/ema , saturation magnetizations 4πMs at 0. 23T, remanence ratios R at 0. 853 and coercivety Hc at 2.3× 10^2A/m.
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