Abstract Effects of cation substitutions on crystal structure parameters, microstructure, dielectric and ferroelectric properties of ceramic solid solutions (Na0.5Bi0.5)(Ti1-xMgx)O3 with x = 0 ÷ 0.1 were studied. Phase transitions near 400 K demonstrate a pronounced relaxor behavior typical for (Na0.5Bi0.5)TiO3 (NBT) based compositions conditioned by presence of polar nanoregions in nonpolar matrix. Changes in the perovskite structure parameters, microstructure, and functional properties of Mg2+ modified NBT ceramics confirmed the influence of the acceptor dopant amount on their properties. Increase in total conductivity at high temperatures and effects of dielectric relaxation were observed with increasing amount of magnesium cations indicating enhancement of ionic conductivity.

中文翻译：

---

钛酸铋钠(Na0.5Bi0.5)(Ti,Mg)O3基无铅钙钛矿陶瓷的相形成和弛豫特性

摘要 研究了阳离子取代对x = 0 ÷ 0.1 陶瓷固溶体(Na0.5Bi0.5)(Ti1-xMgx)O3 晶体结构参数、微观结构、介电性能和铁电性能的影响。接近 400 K 的相变表现出明显的弛豫行为，典型的是基于 (Na0.5Bi0.5)TiO3 (NBT) 的组合物，其条件是非极性基质中存在极性纳米区域。Mg2+ 改性 NBT 陶瓷钙钛矿结构参数、微观结构和功能性能的变化证实了受主掺杂量对其性能的影响。随着镁阳离子量的增加，观察到高温下总电导率的增加和介电弛豫的影响，表明离子电导率的提高。