The stabilization of a perovskite structure in yet-unreported Pb(Zn_1/2W_1/2)O₃ (PZW) was attempted through compositional modification by multiple species of Mg and Fe for Zn. The attempt was accomplished through the substitutions by ≥20 mol% Pb(Mg_1/2W_1/2)O₃ (PMW) at the presence of additional 20 mol% Pb(Fe_2/3W_1/3)O₃ (PFW). The perovskite formation yields were 0% (0.8PZW-0.2PFW), 88.3% (0.6PZW-0.2PMW-0.2PFW), and ≥ 99.7% (virtually completed state) at higher levels of substituent PMW. Lattice parameters of the perovskite structure decreased nearly linearly with increasing fractions of Mg. Developed microstructures of the sintered ceramics mostly revealed well-developed perovskite grains with a multi-faceted polyhedral morphology. Their fracture modes were virtually intergranular. Frequency-dependent dielectric dispersion behaviors, with diffuse modes in the phase transition, were observed at the modified composition range. Values of the maximum dielectric constant increased sharply at an intermediate composition range, whereas corresponding temperatures were comparatively insensitive to the compositional change.

中文翻译：

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Fe掺杂对Pb（[Zn，Mg] 1/2 W 1/2）O 3陶瓷钙钛矿发展和介电性能的影响

试图通过多种Mg和Fe对Zn的成分改性，试图使尚未报告的Pb（Zn _1/2 W _1/2）O ₃（PZW）中的钙钛矿结构稳定。尝试通过在存在额外20 mol％Pb（Fe _2/3 W _1/3）O ₃的情况下用≥20mol％Pb（Mg _1/2 W _1/2）O ₃（PMW）替代来完成（PFW）。在较高取代基PMW水平下，钙钛矿形成产率为0％（0.8PZW-0.2PFW），88.3％（0.6PZW-0.2PMW-0.2PFW）和≥99.7％（虚拟完成状态）。钙钛矿结构的晶格参数随镁含量的增加几乎呈线性下降。烧结陶瓷发达的微观结构大多显示出钙钛矿晶粒发达，具有多面多面体形态。他们的断裂模式实际上是晶间的。在修正的组成范围内观察到频率相关的介电色散行为，在相变中具有扩散模式。最大介电常数的值在中间组成范围内急剧增加，而相应的温度对组成变化相对不敏感。