The Dielectric Behavior of BaTiO3 Based Ceramics Doped With La/Mn

被引：7

作者：

Ding Shihua ^{[1
]}

Zhao Ping ^{[1
]}

Song Tianxiu ^{[1
]}

Yang Xiaojing ^{[2
]}

机构：

[1] Xihua Univ, Sch Mat Sci & Engn, Chengdu 610039, Peoples R China

[2] Xihua Univ, Sch Energy & Environm, Chengdu 610039, Peoples R China

来源：

FERROELECTRICS | 2012年 / 426卷

基金：

中国国家自然科学基金;

关键词：

Dielectric relaxation; diffuse phase transitions; remanent polarization; coercive electric field;

D O I：

10.1080/00150193.2012.671107

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

BaTiO3 based ferroelectric ceramics (with some additives such as SnO2 and ZrO2 etc) were prepared by solid state reaction. Mn2+ or Mn3+ as an acceptor substituting for Ti4+ in B sites and La3+ as a donor substituting for Ba2+ in A sites were co-doped in BaTiO3 based ceramics. The effect of the donor and acceptor (La/Mn) on the dielectric dispersion properties of BaTiO3 based ceramics was investigated. The Mn = 1.6% mol and La = 0, 0.10%, 1.1%, 1.4% mole. When the content of La (donor) increased, the ferroelectric relaxor behavior was observed and the dielectric permittivity decreased. When La varied from 0% to 1.4% mol (Mn = 1.6% mol), remnant polarization from 7.96 to 0.58 mu C/cm(2), coercive field from 4.4 to 1.0 kV/cm, and piezoelectric constant d(33) from 90 to 35 pC/N respectively.

引用

页码：66 / 71

页数：6

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