层状类钙钛矿结构新铌酸盐KSr_2Nb_3O_(10)  

A NEW NIOBATE KSr\-2Nb\-3O\-\{10\} WITH PEROVSKITELIKE LAYERED STRUCTURE

作　　者：方亮[1] 张辉[1] 吴伯麟[1] 袁润章[1] 

机构地区：[1]武汉工业大学材料复合新技术国家重点实验室

出　　处：《无机化学学报》1999年第4期504-506,共3页Chinese Journal of Inorganic Chemistry

基　　金：国际衍射数据中心(ICDD)资助

摘　　要：一些铌酸盐具有优良的压电、铁电性能及较大的非线性光学效应，因此铌酸盐的人工合成、结构与性能的研究受到重视［１，２］，１９９５年ｄｅＡｒａｕｊｏ等人报道了类钙钛矿结构含铋层状铌酸盐化合物的铁电薄膜具有抗疲劳特性，并具有很好的信息存储寿命和较低的漏电流，...; A new niobate compound KSr\-2Nb\-3O\-\{10\} was synthesized for the first time. The chemical compositions, crystal structure, optical property, density and melting point of the new compound were characterized by EPMA, TEM, XRD, DTA and so on. KSr\-2Nb\-3O\-\{10\} crystallizes the orthorhombic system with unit cell parameters \%a\%=0.7816(1) nm, \%b\%=0.7764(2) nm, \%c\%=2.9995(2) nm, \%V\%=\{1.8114(4)\} nm\+3, and space group \%P\%2\-12\-12\-1, Z=8. The structure may be described as treble perovskite sheets \+- interleaved with K\++. Further, it was found that KSr\-2Nb\-3O\-\{10\} has intercalation phenomenon. Na\++, Li\++, H\++, NH\++\-4 could exchange the interlayer cations K\++ of KSr\-2Nb\-3O\-\{10\}, and nhexylamine also could intercalate into the place between the layers of \+-.\;\;

关 键 词：KSr2Nb3O10 铌酸盐 类钙钛矿结构 插层现象 

分 类 号：O614.512[理学—无机化学]