Effects of (LiCe) co-substitution on the structural and electrical properties of CaBi2Nb2O9 ceramics

doi:10.1088/1674-1056/21/3/037701

中国物理B ›› 2012, Vol. 21 ›› Issue (3): 37701-037701.doi: 10.1088/1674-1056/21/3/037701

田晓霞¹,屈绍波¹ ²,杜红亮¹,李晔¹,徐卓²

收稿日期:2011-06-24 修回日期:2011-09-19 出版日期:2012-02-15 发布日期:2012-02-15
通讯作者: 田晓霞,xiaoxiatian@126.com E-mail:xiaoxiatian@126.com

Effects of (LiCe) co-substitution on the structural and electrical properties of CaBi₂Nb₂O₉ ceramics

Tian Xiao-Xia(田晓霞)^a)†, Qu Shao-Bo(屈绍波)^a)b), Du Hong-Liang(杜红亮)^a), Li Ye(李晔)^a), and Xu Zhuo(徐卓)^b)

a. College of Science, Air Force Engineering University, Xi醤 710051, China;
b. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi醤 Jiaotong University, Xi醤 710049, China

Received:2011-06-24 Revised:2011-09-19 Online:2012-02-15 Published:2012-02-15
Contact: Tian Xiao-Xia,xiaoxiatian@126.com E-mail:xiaoxiatian@126.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 50632030 and 10804130) and the Shaanxi Provincial Natural Science Foundation, China (Grant No. 2011JM6012).

摘要/Abstract

Abstract: The piezoelectric, dielectric, and ferroelectric properties of the (LiCe) co-substituted calcium bismuth niobate (CaBi₂Nb₂O₉, CBNO) are investigated. The piezoelectric properties of CBNO ceramics are significantly enhanced and the dielectric loss tanδ decreased. This makes poling using (LiCe) co-substitution easier. The ceramics (where $\Box$ represents A-site Ca²⁺ vacancies, possess a pure layered structure phase and no other phases can be found. The Ca_0.88(LiCe)_0.04$\Box$_0.04Bi₂Nb₂O₉ ceramics possess optimal piezoelectric properties, with piezoelectric coefficient (d₃₃) and Curie temperature (T_C) found to be 13.3 pC/N and 960 ℃, respectively. The dielectric and piezoelectric properties of the (LiCe) co-substituted CBNO ceramics exhibit very stable temperature behaviours. This demonstrates that the CBNO ceramics are a promising candidate for ultrahigh temperature applications.

Key words: co-substitution, structural properties, electrical properties, CaBi₂Nb₂O₉

中图分类号: (Piezoelectric and electrostrictive constants)

77.65.Bn

77.80.B- (Phase transitions and Curie point) 77.84.-s (Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)

田晓霞, 屈绍波, 杜红亮, 李晔, 徐卓. [J]. 中国物理B, 2012, 21(3): 37701-037701.

Tian Xiao-Xia(田晓霞), Qu Shao-Bo(屈绍波), Du Hong-Liang(杜红亮), Li Ye(李晔), and Xu Zhuo(徐卓) . Effects of (LiCe) co-substitution on the structural and electrical properties of CaBi₂Nb₂O₉ ceramics[J]. Chin. Phys. B, 2012, 21(3): 37701-037701.

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