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Fe,Ni掺杂（Zr,Sn）TiO4陶瓷的结构和介电性能
Structure and Dielectric Properties of Fe and Ni doped （Zr,Sn）TiO4 Ceramic
【摘要】 用电子陶瓷工艺制备主晶相为(Ｚｒ,Ｓｎ)ＴｉＯ４的介电陶瓷,(Ｚｒ;Ｓｎ)ＴｉＯ４的结构属正交晶系,空间群Ｐｂｃｎ．研究用Ｆｅ,Ｎｉ掺杂对(Ｚｒ,Ｓｎ)ＴｉＯ４陶瓷的介电性能的影响:铁掺杂降低了瓷料的烧结温度,同时减小了系统的Ｑ值(Ｑ＝１/ｔｇδ);但在一定的范围内,随着Ｎｉ掺杂量的增大,Ｑ值的下降被抑制,这可能是因为Ｎｉ离子阻碍了Ｆｅ离子扩散进入晶粒,使得Ｆｅ离子富集在晶界上,形成Ｆｅ－Ｎｉ尖晶石结构,减少了Ｆｅ对Ｑ值的影响．
【Abstract】 The dielectric ceramic with a main crystal phase of (Zr,Sn)TiO4 was prepared by conventional electronic ceramics technology. The structure of (Zr,Sn)TiO4 is orthorhombic with space group Pbcn. The effects of Fe and Ni doping on the dielectric properties of (Zr,Sn)Ti04 system ceramics were investigated. Fe dopants decrease the sintering temperature and reduce Q values of the system(Q=l/tgδ). With both Fe and Ni doping, the decreasing of Q factor can be suppressed. Because of Ni ions probably suppressing the diffusion of Fe ions into the grain, Fe ions stay at the grain boundaries and form the Fe-Ni spinel structure, which reduces the effects of Fe ions on Q values.
【Key words】 (Zr,Sn)TiO4； dielectric properties； Ni dopants； Fe dopants；
- 【文献出处】 无机材料学报 ,Journal of Inorganic Materials , 编辑部邮箱 ,2002年03期
- 【分类号】TQ174
- 【被引频次】10
- 【下载频次】124