Ti^(4+)取代对石榴石材料微波性能的影响

Effect of Ti^(4+)Substitution on the Microwave Properties of Garnet Ferrite Material

采用普通陶瓷工艺制备石榴石铁氧体材料,研究Ti^(4+)取代对其介电常数ε′、居里温度θ_(c)、饱和磁化强度M_(s)、铁磁共振线宽ΔH等性能的影响。研究表明,随着Ti^(4+)取代量的增加,材料的饱和磁化强度M_(s)、居里温度θ_(c)降低,材料介电常数ε′和铁磁共振线宽ΔH增大。当Ti^(4+)含量x=0.7时,材料的介电常数ε′达到16,铁磁共振线宽ΔH没有明显增大。当x=1.0时,材料的介电常数ε′超过20,但铁磁共振线宽ΔH显著增高。

In this paper,the effects of Ti^(4+)on the dielectric constant,curie temperature,saturation magnetization and resonance linewidth of garnet ferrite material prepared by ceramic process were studied.The results show that,with the increase of the substitution content,the saturation magnetization and curie temperature decreased,dielectric constant and resonance linewidth increased.When the content of Ti^(4+)was 0.7,the dielectric constant was about 16,and the resonance linewidth increased slightly,the dielectric constant was more than 20 at x=1.0,but the resonance linewidth increased largely.