Polar Order Evolutions near the Rhombohedral to Pseudocubic and Tetragonal to Pseudocubic Phase Boundaries of the BiFeO₃-BaTiO₃ System

Solid solutions of (1- )BiFeO₃- BaTiO₃ (BF-BT, 0.05 ≤ ≤ 0.98) were prepared and characterized. It was found that the dielectric constant ε , remnant polarization and piezoelectric coefficient reach their maximum values near the rhombohedral-pseudocubic phase boundary. In particular, the 0.7BF-0.3BT...

Full description

Saved in:
Bibliographic Details
Published in:Materials 2015-12, Vol.8 (12), p.8355-8365
Main Authors: Wei, Yongxing, Jin, Changqing, Zeng, Yiming, Wang, Xiaotao, Xu, Gang, Wang, Xiaoli
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Solid solutions of (1- )BiFeO₃- BaTiO₃ (BF-BT, 0.05 ≤ ≤ 0.98) were prepared and characterized. It was found that the dielectric constant ε , remnant polarization and piezoelectric coefficient reach their maximum values near the rhombohedral-pseudocubic phase boundary. In particular, the 0.7BF-0.3BT composition shows large polarization ( > 20 μC/cm²) and a temperature-stable piezoelectric property ( > 100 pC/N when the annealing temperature is lower than ~400 °C). Near the tetragonal-pseudocubic phase boundary, ε and decrease, and the piezoelectric property vanishes when the BF content reaches 4 mol %.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma8125462