【摘要】 利用传统陶瓷工艺制备了化学式为Y3-aGdaFe5-b-cAlbMncO12的复合石榴石铁氧体,研究了Gd3+、Al3+和Mn3+复合取代对(YGdAlMn)IG铁氧体材料高功率特性的影响。结果表明,烧结试样的饱和磁化强度随着Gd3+、Al3+含量的增加而降低,其自旋波线宽、温度稳定性(10~180℃之间的温度系数为(-1.9~-2.8)×10-3(1/℃))随Gd3+含量的增加而增大;同时Mn3+取代可以明显提高电阻率、降低介电损耗。这些特性的改善对制备高功率石榴石铁氧体器件具有指导意义。更多还原

【Abstract】 The composite garnet ferrite with the chemical formula Y3-aGdaFe5-b-xAlbMnxO12 is prepared by the conventional ceramic method.The influence of Gd3+,Al3+ and Mn3+ composite substitution on high power properties of garnet-ferrite materials is investigated.The results show that the saturation magnetization decreases with the increase of Gd3+,Al3+contents,and the spin wave line width and the stability of temperature(the coefficient is(-1.9～-2.8)×10-3(1/℃) between 10℃ and 180℃) increase with the increase of Gd3+ content.Mn3+ iron substituted garnet can dramatically improve the resistivity and reduce the dielectric loss.The improvement of these pro-perties plays an important role in producing the high power garnet ferrite components.更多还原