The ferroelectric transition temperature as an intrinsic probe for sintered nanocrystalline BaTiO3 synthesized under supercritical conditions

被引：13

作者：

Elissalde, C ^{[1
]}

Reverón, H ^{[1
]}

Aymonier, C ^{[1
]}

Michau, D ^{[1
]}

Cansell, FO ^{[1
]}

Maglione, M ^{[1
]}

机构：

[1] Univ Bordeaux 1, CNRS, UPR 9048, Inst Chim Mat Condensee Bordeaux, F-33608 Pessac, France

来源：

NANOTECHNOLOGY | 2005年 / 16卷 / 06期

关键词：

D O I：

10.1088/0957-4484/16/6/030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have investigated the sintering behaviour of cubic BaTiO3 nanoparticles obtained under supercritical conditions. The ferroelectric properties of samples sintered between 950 and 1300 degrees C were measured from room temperature up to 200 degrees C and in the frequency range 100 Hz-10 kHz. The influence of the initial powder characteristics on the microstructure and dielectric properties of ceramics have been investigated. The ferroelectric transition temperature was used as an intrinsic probe for the ceramic characterization and was then found to be dependent on the Ba:Ti ratio of the initial powder. Understanding the role of the key parameters at different scales (bulk and nanoscale composition, tetragonal distortion, microstructure) on the permittivity, losses and transition temperature would lead to a possible modulation of ferroelectric properties.

引用

页码：797 / 802

页数：6

共 26 条

[1] Crystal growth and dielectric properties of new ferroelectric barium titanate:: BaTi2O5 [J].