钛酸铋钡陶瓷的介电性、铁电性及对晶格结构的依赖性  

Dielectric and ferroelectric properties of BaBi_4Ti_4O_(15) ceramics and their dependence on lattice structure

作　　者：李正法[1] 钟维烈[2] 裘忠平[1] 葛洪良[1] 张沛霖[2] 王春雷[2] 

机构地区：[1]中国计量学院应用物理系,杭州310018 [2]山东大学物理与微电子学院,晶体材料国家重点实验室,济南250100

出　　处：《物理学报》2004年第9期3200-3204,共5页Acta Physica Sinica

基　　金：国家重点基础研究发展规划项目 (批准号 :G19980 614 0 8) ;浙江省人才基金 (批准号 :RC0 10 5 6)资助的课题~~

摘　　要：采用溶胶 凝胶工艺成功制备出BaBi4 Ti4 O1 5微细粉料 ,并利用此微粉烧结出成瓷良好的BaBi4 Ti4 O1 5陶瓷 .研究了BaBi4 Ti4 O1 5陶瓷的铁电 顺电相变 ,测定了BaBi4 Ti4 O1 5的介电特性和饱和状态下的铁电特性 .所作测量表明BaBi4 Ti4 O1 5可能是一种有序 无序型弛豫铁电体 ,呈现一级弥散相变特征 。Good quality barium bismuth titanate (BaBi 4Ti 4O 15 ) ceramics is fabricated successfully with BaBi 4Ti 4O 15 nano powders prepared by Sol-Gel process. The ferroelectric to paraelectric phase transition of barium bismuth titanate ceramics was studied by determining the dielectric and saturated ferroelectric properties of barium bismuth titanate. All measurements show barium bismuth titanate may be a kind of order_disordered relaxor ferroelectrics with a diffused phase transition which is a first ordered one, and its dielectric and saturated ferroelectric properties depended strongly on its lattice structure.

关 键 词：钛酸铋钡陶瓷 铁电性 介电性 晶格结构 溶胶-凝胶法 

分 类 号：TQ174[化学工程—陶瓷工业]