Bi含量对SrBi_4Ti_4O_(15)铁电材料性能的影响  

EFFECT OF Bi CONTENT ON THE PROPERTIES OF SrBi_4Ti_4O_(15) FERROELECTRIC CERAMICS

作　　者：朱骏[1] 毛翔宇[1] 卢网平[1] 惠荣[1] 陆文峰[1] 陈小兵[1] 

机构地区：[1]扬州大学物理科学与技术学院,江苏扬州225002

出　　处：《扬州大学学报（自然科学版）》2003年第1期33-36,共4页Journal of Yangzhou University：Natural Science Edition

基　　金：~~

摘　　要：SrBi 4 Ti 4O 15 ceramics samples with different Bi content of which mole radio, n (Sr): n (Bi): n (Ti):,is 1:4(1+x):4(x=-0.05,0,0.05,0.10,0.15,0.20),are prepared by solid-state reaction method.Their structure is analyzed by X-ray diffraction,and their dielectricity and ferroelectricity are measured.Results show that pure SrBi 4 Ti 4O 15 pahase exists in the samples whith x=0.05 and 0.10.The sintered ceramics with x=0.05 have good ferroelectric and dielectric properties:The remnant polarization (2 P r) and coercive field ( E c) are 2.86×10 -9 C·m -2 and 8.65×10 6V·m -1 .The dielectric constant (ε r) changes litter in the range from 1 kHz to 4MHz,and ε r is 425 at the frequency of 1 MHz.SrBi 4 Ti 4O 15 ceramics samples with different Bi content of which mole radio, n (Sr): n (Bi): n (Ti):,is 1:4(1+x):4(x=-0.05,0,0.05,0.10,0.15,0.20),are prepared by solid-state reaction method.Their structure is analyzed by X-ray diffraction,and their dielectricity and ferroelectricity are measured.Results show that pure SrBi 4 Ti 4O 15 pahase exists in the samples whith x=0.05 and 0.10.The sintered ceramics with x=0.05 have good ferroelectric and dielectric properties:The remnant polarization (2 P r) and coercive field ( E c) are 2.86×10 -9 C·m -2 and 8.65×10 6V·m -1 .The dielectric constant (ε r) changes litter in the range from 1 kHz to 4MHz,and ε r is 425 at the frequency of 1 MHz.

关 键 词：SrBi4Ti4O15铁电材料 介电性能 铁电性能 铋 剩余极化强度 矫顽电场强度 

分 类 号：TM221[一般工业技术—材料科学与工程]