摘要
以熔盐法制备的片状SrBi2Nb2O9晶粒为模板晶粒,固相法制备的SrBi2Nb2O9为基体粉料,采用模板晶粒生长技术和流延法制备了SrBi2Nb2O9织构陶瓷。研究了SrBi2Nb2O9织构陶瓷沿a-b平面方向和c方向的介电、压电及铁电性能,发现SrBi2Nb2O9织构陶瓷的性能呈现出显著的各向异性,其a-b平面方向的介电常数ε3T3/ε0达186,tanδ仅有0.003,压电常数d33=13pC/N,剩余极化强度Pr=10.3μC/cm2,矫顽场强Ec=4.6kV/mm,均明显优于c方向的电性能。
The templated grain growth and tape-casting technique were employed to fabricate textured SrBi2Nb2O9 ceramics by using plate SrBi2Nb2O9 crystal prepared by the molten salt synthesis as template particle and SrBi2Nb2O9 powders synthesized by a solid state reaction method as basic powders.The dielectric,piezoelectric and ferroelectric properties of textured SrBi2Nb2O9 ceramics between the a-b plane and c direction were studied.The results reveal that the electric properties between the a-b plane and c direc-t...
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2009年第3期367-372,共6页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金(50562002)
江西省自然科学基金(2007GZC1258)资助项目
关键词
铌酸锶铋
织构陶瓷
模板晶粒生长法
介电性能
压电性能
strontium bismuth niobate
textured ceramic
templated grain growth
dielectric property
piezoelectric property
