Dielectric and ferroelectric properties of dy-doped Sr2Bi4Ti5O18 ceramics

被引：2
作者：
Qiang, F
Lu, WP
Zhu, J
Chen, XB [1 ]
机构：
[1] Yangzhou Univ, Coll Phys Sci & Technol, Yangzhou 225002, Peoples R China
[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210008, Peoples R China
来源：
INTEGRATED FERROELECTRICS | 2004年 / 65卷
基金：
中国国家自然科学基金;
关键词：
ferroelectrics; Sr2Bi4Ti5O18; ceramic; dy doping; remnant polarization;
D O I：
10.1080/10584580490892845
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Sr2Bi4-xDyxTi5O18 (SBDT x, x = 0-0.20) ceramic samples were prepared, and their dielectric and ferroelectric properties were measured. The remnant polarization (2P(r)) of SBDT x increased at first, then decreased with the increase of Dy content. When Dy content was 0.01, the 2P(r) reached a maximum value of 20.1 muC (.) cm(-2). The variation of 2P(r) for SBDT x related to space charge density and structure distortion. The coercive field (E-c) increased a little after doping. The E-c of SBDT 0.01 was 44.2 kV (.) cm(-1). The ferroelectric property of Sr2Bi4Ti5O18 was enhanced by Dy doping with appropriate content.
引用
收藏
页码：89 / 96
页数：8
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