Ce and W co-doped CaBi2Nb2O9 with enhanced piezoelectric constant and electrical resistivity at high temperature

被引：69

作者：

Shen, Zong-Yang ^{[1
,2
]}

Qin, Chen ^{[1
]}

Luo, Wen-Qin ^{[1
]}

Song, Fusheng ^{[1
]}

Wang, Zhumei ^{[1
]}

Li, Yueming ^{[1
]}

Zhang, Shujun ^{[2
]}

机构：

[1] Jingdezhen Ceram Inst, Energy Storage & Convers Ceram Mat Engn Lab Jiang, China Natl Light Ind Key Lab Funct Ceram Mat, Sch Mat Sci & Engn, Jingdezhen 333403, Peoples R China

[2] Univ Wollongong, Inst Superconducting & Elect Mat, Australian Inst Innovat Mat, Wollongong, NSW 2500, Australia

来源：

JOURNAL OF MATERIOMICS | 2020年 / 6卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Ultra-high temperature ceramics; Piezoelectric properties; Aurivillius phase; Bismuth layered structure; CaBi2Nb2O9; STRUCTURAL DISTORTION; THERMAL-STABILITY; MICROSTRUCTURE; PIEZOCERAMICS; CERAMICS; BI; NB;

D O I：

10.1016/j.jmat.2019.12.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ce and W co-doped CaBi2Nb2O9 ceramics with chemical formula Ca0.96Ce0.04Bi2 Nb2-xWxO9 (CCBN-W100x, x = 0-0.07) are fabricated via conventional solid state sintering method, to investigate the effect of W addition on the structure, electrical resistivity, dielectric and piezoelectric properties. A piezoelectric constant d(33) of 13.4 pC/N is obtained in CCBN-W2 ceramics, >100% higher than that of pure CaBi2Nb2O9 (d(33) = 5.8-6.4 pC/N). Of particular significance is that the electrical resistivity of CCBN-W2 ceramics (rho = 3.7 x 10(9) Omega cm at 500 degrees C) is three orders of magnitude higher than pure CaBi2Nb2O9 (rho = 2.9 x 10(6)Omega cm at same temperature). All these properties, together with its low dielectric loss (tan delta = 0.13%) and excellent d(33) thermal stability up to 800 degrees C, merit the CCBN-W2 ceramics for high temperature piezoelectric sensing applications. (C) 2019 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.

引用

页码：459 / 466

页数：8

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