Abstract (Li, Ce, and Nd)-multidoped CaBi 2 Nb 2 O 9 (CBN) Aurivillius phase ceramics were prepared via a conventional solid-state sintering route. The crystal structure including bond lengths and bond angles, microstructure, dielectric constant, DC resistivity, and piezoelectric properties were systematically investigated. Rietveld-refinements of X-ray results indicated that small quantity of (Li, Ce, Nd) doping ( 3+ with 6s2 lone pair electrons by symmetric Li + , Ce 3+ and Nd 3+ ions decreased the orthorhombic distortion. The morphologies and electrical properties of sintered ceramics were tailored by the introducing (Li, Ce, Nd) multi-dopants. The improvement of piezoelectric properties of modified-CBN ceramics were attributed to decreasing grain sizes and morphotropic phase boundary (MPB). Ca 0.85 (Li 0.5 Ce 0.25 Nd 0.25 ) 0.15 Bi 2 Nb 2 O 9 (CBNLCN-15) ceramics had optimum properties, and d 33 and T c values were found to be ~ 13.1 pC/N and ~ 900 °C, respectively.

中文翻译：

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(Li, Ce, Nd)-多掺杂CaBi 2 Nb 2 O 9 高温陶瓷的晶体结构和电学性能

摘要 (Li、Ce 和 Nd)-多掺杂 CaBi 2 Nb 2 O 9 (CBN) Aurivillius 相陶瓷通过传统的固态烧结方法制备。系统地研究了晶体结构，包括键长和键角、微观结构、介电常数、直流电阻率和压电性能。X 射线结果的 Rietveld 细化表明，少量的 (Li, Ce, Nd) 掺杂（ 3+ 与 6s2 孤对电子通过对称的 Li + 、Ce 3+ 和 Nd 3+ 离子减少了正交畸变。形貌和通过引入 (Li, Ce, Nd) 多掺杂剂来调整烧结陶瓷的电性能。改性 CBN 陶瓷压电性能的改善归因于晶粒尺寸的减小和同形相界 (MPB)。Ca 0.85 (Li 0.5 Ce 0.25 Nd 0.25 ) 0.