您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    No. 6    December 2009

[PDF Download]    [Flash Online]

    

Influence of substitution of Nd3+ for Bi3+ on structure and
piezoelectric properties of SrBi2−χNdχNb2O9 (
SUN Lin(孙 琳)1, CHU Jun-hao(褚君浩)1, YANG Ping-xiong(杨平雄)1, YUE Fang-yu(越方禹)1,
LI Ya-wei(李亚巍)1, FENG Chu-de(冯楚德)2, M

1. Key Laboratory of Polar Materials and Devices of Ministry of Education,
East China Normal University, Shanghai 200062, China;
2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Abstract:SrBi2−χNdχNb2O9 (χ=0, 0.1, 0.2 and 0.4) bismuth layer-structured ferroelectric ceramics were prepared by the solid-state reaction sintering method. The accurate position of Nd element in SrBi2−χNdχNb2O9 ceramics was determined by the X-ray Rietveld method and Synchrotron radiation X-ray absorption fine structure (XAFS) technology. The partial substitution of Nd3+ for Bi3+ leads to the decrease in the distortion of NbO6 octahedron for SrBi2−χNdχNb2O9 ceramics and also lowers the piezoelectric properties of SrBi2−χNdχNb2O9 ceramics. Meanwhile, the temperature coefficient of resonant frequency (TCF) decreases when Nd element partially replaces Bi element in SrBi2−χNdχNb2O9 ceramics.

 

Key words: bismuth layer-structured ferroelectrics; X-ray Rietveld method; synchrotron radiation XAFS; piezoelectric properties

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn