云斯宁 Likes:

Affiliation of Author(s):

材料科学与工程学院

Journal:

Materials Letters

Key Words:

中文关键字：陶瓷，钙钛矿，铁电，电性能，英文关键字：ceramics；pervoskite；ferroelectric；elecronical prop

Abstract:

Ferroelectric properties of Bi doped (Ba，Ca，Bi）TiO3 (Bi–BCT) ceramic prepared by the solid-state technique have been studied. An interesting double-like hysteresis (P–E) loop at room temperature (300 K) with the remarkable linear dielectric response was observed over a certain electric field range. Room temperature P–E loops before and after de-aging, as well as those at different values of field cycling, could exclude the possibility that the double P–E loops might result from the antiferroelectric components and the electric field induced paraelectric–ferroelectric (PE–FE) transition near Curie temperature (Tc) in Bi–BCT, and verify that there exists a diffusional aging effect in Bi–BCT. A symmetryconforming short-range ordering (SC-SRO) of point defects is suggested to be responsible for the observations of the interesting double-like P–E loop in Bi–BCT.

Note:

云斯宁

Co-author:

XiaoliWang,JingShi,JianhuiZhu,DelongXu

First Author:

yunsining

Indexed by:

Journal paper

Volume:

卷：63

Issue:

期：21

Page Number:

页：1883-1885

Translation or Not:

no

Date of Publication:

2009-08-01