奥里维里斯
陶瓷
压电
化学
固溶体
居里温度
电阻率和电导率
铋
实现(概率)
复合材料
铁电性
光电子学
凝聚态物理
材料科学
电介质
电气工程
数学
有机化学
工程类
物理
统计
铁磁性
作者
Ning Chen,Fei Wang,Xu Li,Xinji Yang,Hao Chen,Zhi Tan,Jie Xing,Jianguo Zhu
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2023-04-21
卷期号:62 (18): 6993-7002
被引量:5
标识
DOI:10.1021/acs.inorgchem.3c00244
摘要
For bismuth layered structural ferroelectrics (BLSFs), CaBi2Ta2O9 (CBTa) demonstrates valuable application potential for a high Curie temperature (TC) of 923 °C and a good high-temperature resistivity, but low piezoelectric constant d33 values. Compared with CBTa-based ceramics, CaBi2Nb2O9 (CBN) with a high TC of 940 °C is easy to modify and realize excellent enhancement of piezoelectric properties. Here, by introducing a CBN-based component into CBTa, a new type of solid-solution ceramic with the formula Ca0.94(LiCe)0.03Bi2Ta2O9-xCa0.94(LiCe)0.03Bi2Nb2O9 (LC-CBTa-xCBN) is fabricated to obtain the advantages of both of them. Moreover, optimal electrical performances are obtained in the LC-CBTa-0.4CBN ceramic (d33 ∼ 14.1 pC/N, ρ ∼ 1.08 × 106 at 600 °C, TC ∼ 940 °C). The correlated characterizations, including structure and electricity, provide further realization of an enhanced performance mechanism. Therefore, this method of constructing a new type of solid solution provides a new strategy to modify BLSFs.
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