OBTENTION AND CHARACTERIZATIONOF MODIFIED Bi2 Sr Nb2 O9 AURIVILLIUS-TYPECERAMICS

被引：17

作者：

Jimenez, B. ^{[1
]}

Duran-Martin, P. ^{[1
]}

Castro, A. ^{[1
]}

Millan, P. ^{[1
]}

机构：

[1] Inst Ciencia Mat, E-28006 Madrid, Spain

来源：

FERROELECTRICS | 1996年 / 186卷

关键词：

D O I：

10.1080/00150199608218041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Aurivillius ferroelectric ceramics, based on the Bi2Sr Nb2O9 compound, have been developed by making isomorphic substitutions in the (Bi2O2)(2+) layer. High density ceramics were obtained by the uniaxial hot-pressing sintering technique. The macroscopic characterization was carried out by measuring both the dielectric constant, in the frequency range from 100Hz to 15MHz at temperatures between 20 degrees C and 850 degrees C, and piezoelectric parameters. We found that increasing the amount of cation Bi3+ substitution results in higher transition temperature values. Samples showed a high electrical resistivity that made poling difficult. Anyway, we found an important piezoelectric activity in the samples with tellurium present in their composition, with d(33) greater than 11pC/N.

引用

页码：93 / 96

页数：4

共 5 条

[1]

AURIVILLIUS B, 1949, ARK KEMI, V0001

[2]

Castro A., 1994, Ferroelectrics, V153, P255, DOI 10.1080/00150199408016576

[3] SUBSTITUTIONS FOR BI-3+ INTO (BI2O2)2+ LAYERS OF THE AURIVILLIUS (BI2O2) (AN-1BNO3N+1) OXIDES [J].