Effect of Nb doping on the microstructural and electrical properties of the PZT ceramics
Effect of Nb doping on the microstructural and electrical properties of the PZT ceramics
复制标题
DOI：
10.1016/s0955-2219(01)00017-6
复制
发表时间：
2001
影响因子：
5.7
通讯作者：
Mário R Pereira;A. G. Peixoto;M. Gomes
中科院分区：
文献类型：
--
作者：
Mário R Pereira;A. G. Peixoto;M. Gomes
本研究的目的是确定在PZT（65/35）为基础的块体材料中的异价Nb 5+掺杂在其微观结构的演变和其电性能的影响。Nb含量选择在0-10摩尔%的范围内。这些材料使用常规方法制备。发现煅烧的混合物是单相钙钛矿粉末。所形成的粉末的特性进行了描述和相关的微观结构的烧结材料，即晶粒尺寸的演变和孔隙的消除。Nb添加被发现改变显着的晶胞参数，因此，介电和铁电性能。与普通PZT和PLZT材料的电性能进行了比较;在PLZT（x/65/35）的情况下，几种含Nb的组合物显示扩散相变（DPT）特性。Nb含量也导致PZT的软化。然而，铁电和介电行为保持强烈依赖于微结构特性。
The aim of this study is the determination of the effect of the aliovalent Nb5+doping in PZT (65/35) based bulk materials in their microstructural evolution and their electrical properties. The Nb content was chosen in the range 0–10 mol%. These materials were prepared using the conventional way. The calcined mixture was found to be monophasic perovskite powder. The characteristics of the as-formed powder were described and related to the microstructural ones in the sintered material, namely the grain size evolution and the porosity elimination. Nb addition was found to alter significantly the parameters of the crystal cell, and so, the dielectric and ferroelectric properties. The electrical properties were compared with those of common PZT and PLZT materials; As in the case of PLZT (x/65/35), several Nb containing compositions show diffuse phase transition (DPT) characteristics. The Nb content is also leading to softening of the PZT. However, the ferroelectric and dielectric behaviour kept strongly dependent on the microstructural characteristics.