云斯宁 Likes:

Affiliation of Author(s):

材料科学与工程学院

Journal:

Journal of Electroceramics

Key Words:

中文关键字：介电性能；弛豫行为；弥散相变；钛酸钡，英文关键字：Dielectric properties ；Relaxation behavior；Diffuse

Abstract:

Ferroelectric ceramics of BSCT (0≤x≤0.30) were prepared by a routine solid-state reaction technique. Co-substitution of Sr2+ and Ca2+ for Ba2+ with equal mole in BaTiO3 restrain the maximal dielectric constant Km strongly when 0.2≥x>0. However, composition BSCT(x=0.30)TiO3 shows the higher maximal dielectric constant. With increasing Sr and Ca content x, temperature Tm of the maximal dielectric constant Km shifts to low temperature and all selected compositions for study exhibit a broad phase transition temperature range. The composition (Ba0.4Sr0.3Ca0.3)TiO3 presents characteristics of ferroelectric relaxor, value of Km decreases and temperature Tm increases with increasing frequency.

Note:

云斯宁

Co-author:

xiaoliwang

First Author:

yunsining

Indexed by:

Journal paper

Volume:

卷：21

Issue:

期：1-4

Page Number:

页：585-588

Translation or Not:

no

Date of Publication:

2008-12-01