Sn^(4+)取代对Ni系微波铁氧体材料性能的影响  

Effects of Sn^(4+) Substitution on the Magnetic Properties of Microwave Ni-series Ferrites

作　　者：袁红兰[1] 冯涛[1] 

机构地区：[1]西南应用磁学研究所,四川绵阳621000

出　　处：《磁性材料及器件》2010年第5期31-33,共3页Journal of Magnetic Materials and Devices

摘　　要：采用普通陶瓷工艺制备了Sn4+取代的Ni系尖晶石Ni1-a+xCuaSnxMnbFe2-b-2xO4微波多晶铁氧体材料,研究了材料性能随Sn4+取代量的变化。结果表明,铁磁共振线宽ΔH随Sn4+取代量x的增大先减小后增大,当x=0.1时,ΔH有最小值;饱和磁化强度Ms、居里温度TC随取代量x的增大单调降低,在x=0.1时不存在拐点。初步分析了各向异性线宽ΔHa和气孔致宽ΔHp对ΔH的贡献,得出ΔH先降低而后增大是由各向异性线宽ΔHa所致。Sn^4＋-substituted microwave spine ferrite NiSn： Ni1-α＋xCuαSnxMnbFe2-b-2xO4 was prepared by traditional ceramic processing, and the dependence of material properties on the substitution content was analyzed. The experiment results showed that, with increasing Sn^4＋ content, ferromagnetic resonance linewidth △H decreases fistly and then increases with a minimum value at x=0,1. For saturation magnetization Ms and Curie temperature Tc, there are no inflexions at x=0.1 and they go down with x. The contribution of anisotropy linewidth △Ha and pore-induced AHp to △H was analyzed, coming to a conclusion that the first increase and then decrease of △H results from anisotropy linewidth △Ha.

关 键 词：尖晶石铁氧体 Sn4+取代 饱和磁化强度 铁磁共振线宽 介电损耗 居里温度 

分 类 号：TM277.4[一般工业技术—材料科学与工程]