熔盐法合成BaTiO_(3)基钙钛矿纳米复合体及表征  

Synthesis and Characterization of BT/ST Perovskite Nanocomposite by Molten Salt Method

作　　者：张静 王娅 杨凤娇 张蛟元 毕晨雪 杨雪莹 赵丹 赵卫星 姜红波 Zhang Jing;Wang Ya;Yang Fengjiao;Zhang Jiaoyuan;Bi Chenxue;Yang Xueying;Zhao Dan;Zhao Weixing;Jiang Hongbo(Faculty of Chemistry and Chemical Engineering,Baoji University of Arts and Sciences,Baoji 721013,China)

机构地区：[1]宝鸡文理学院化学化工学院,陕西宝鸡721013

出　　处：《山东化工》2022年第11期15-17,22,共4页Shandong Chemical Industry

基　　金：陕西省重点研发计划项目资助(No:2020KW-041);陕西省留学人员科技活动择优资助项目(No:2020013);陕西省大学生创新创业训练计划项目(No:S202110721078);宝鸡文理学院2021年大学生创新创业训练计划项目(No:2021XJ090和2021XJ103)。

摘　　要：研究提出制备BaTiO_(3)(BT)-SrTiO_(3)(ST)二元钙钛矿纳米复合体,以板状钛酸H_(1.07)Ti_(1.73)O_(4)·nH_(2)O(HTO)为前驱物,与BaCO_(3)和SrCO_(3)进行分散混合,采用熔盐合成法成功地制备BT/ST纳米介观晶体复合体。由于BT和ST的晶胞参数存在一定的差异,在BT晶体和ST晶体之间会产生异质外延界面,形成界面扭曲,导致不同方向应力改变,进而提高BT/ST复合体的压电特性,有望成为新一代主流压电材料。In this study,BaTiO_(3)(BT)-SrTiO_(3)(ST)perovskite nanocomposite was synthesized,and the solid H_(1.07)Ti_(1.73)O_(4)·nH_(2)O(HTO)with plate-like particle was used as the precursor,which was fully mixed with BaCO_(3) and SrCO_(3),to prepared BT/ST nanocomposite by molten salt synthesis.Because the lattice constants of BT and ST are different,a heteroepitaxy interface will be formed between BT crystals and ST crystal,thus forming interface distortion,leading to stress in different directions,thus improving the BT/ST composite piezoelectric and ferroelectric.It is expected to become a new generation of mainstream piezoelectric materials.

关 键 词：合成 压电材料 纳米复合体 熔盐法 

分 类 号：TQ134[化学工程—无机化工] TB33[一般工业技术—材料科学与工程]