Dielectric and piezoelectric properties of alkaline-earth titanate doped (K0.5Na0.5)NbO3 ceramics

被引：62

作者：

Chang, Yunfei ^{[1
]}

Yang, Zupei ^{[1
]}

Chao, Xiaolian ^{[1
]}

Zhang, Rui ^{[1
]}

Li, Xiaorui ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Sch Chem & Mat Sci, Xian 710062, Peoples R China

来源：

MATERIALS LETTERS | 2007年 / 61卷 / 03期

关键词：

piezoelectric ceramics; (K; Na)NbO3; sintering; X-ray technique; dielectric properties;

D O I：

10.1016/j.matlet.2006.05.065

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

(K0.5Na0.5)NbO3 (KNN) and 0.995(K0.5Na0.5)NbO3-0.005AETiO(3) (AE=Mg, Ca, Sr, Ba) were successfully prepared by conventional ceramic processing and without the cold-isostatic-pressing (CIP) process. The effects of low AETiO(3) (AET) concentration on crystal structure, density, dielectric and piezoelectric properties of the KNN based ceramics were evaluated. The results show that adding MgTiO3(MT) and BaTiO3(BT) to KNN can lead to the appearance of a trace amount of second phase(s), reduced density and deteriorated electrical properties. Adding CaTiO3(CT) and SrTiO3(ST) to KNN can promote densification and optimize electrical properties. Two phase transitions at T1-o (the temperature at which the phase transition from orthorhombic to tetragonal occurs) and T-c (the Curie temperature) were observed in KNN and all KNN-AET ceramics, by using differential scanning calorimetry (DSC) analysis and dielectric characterization. Adding AET to KNN caused the variations of T1-o and T-c. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：785 / 789

页数：5

共 12 条

[11] Piezoelectric properties of spark-plasma-sintered (Na 0.5K0.5)NbO3-PbTiO3 ceramics [J].

Wang, RP ;

Xie, RJ ;

Sekiya, T ;

Shimojo, Y ;

Akimune, Y ;

Hirosaki, N ;

Itoh, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2002, 41 (11B) :7119-7122

[12] Structure and electrical properties of new Pb(Zr,Ti)O3-Pb(Fe2/3W1/3)O3-Pb(Mn1/3Nb2/3)O3 ceramics [J].

Yang, ZP ;

Zong, XM ;

Li, H ;

Chang, YF .

MATERIALS LETTERS, 2005, 59 (27) :3476-3480

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