LaTi_(0.8)Li_(0.2)O_3的高温高压合成及表征  

High-pressure and Temperature Synthesis and Characterization of LaTi_(0.8)Li_(0.2)O_3

作　　者：吕淑玲[1] 苗继鹏[2] 袁洪春[1] 

机构地区：[1]淮北煤炭师范学院物理系,安徽淮北235000 [2]中国科学院长春应用化学研究所稀土化学与物理开放实验室,吉林长春130022

出　　处：《淮北煤师院学报（自然科学版）》2002年第3期18-20,共3页Journal of Huaibei Teachers College(Natural Sciences Edition)

摘　　要：利用高温高压合成方法合成一种新的具有混合价态的钙钛矿氧化物LaTi0.8Li0.2O3.XRD测量表明,样品为单相的立方结构.EPR测试表明,Ti离子为+3、+4混合价.IR测量表明,B-O键伸缩振动谱带没有发生劈裂.高温高压可以改变Ti离子的价态.A novel mixed valence perovskite oxide was made by using high pressure and high temperature synthesis. XRD analysis showed that the sample is a single phase and belong to cubic structure. EPR measurement indicated that Ti ions in the sample are in mixed valence state of +3 and +4.High pressure and high temperature can alter the valence state of Ti4+ ions. IR measurement indicated that there is no splitting in Ti-O bond stretching vibration absorption band.

关 键 词：LaTi0.8Li0.2O3 高温高压合成 混合价态 钙钛矿氧化物 结构表征 二氧化钛 氧化镧 硝酸锂 

分 类 号：O614.331[理学—无机化学]