BaTiO_3改性PZNT91/9晶体的生长工艺研究  

Research on Growth Technical of BaTiO_3 Doped PZNT91/9 Crystals

作　　者：曹林洪[1] 张震[1] 徐光亮[1] 

机构地区：[1]西南科技大学材料科学与工程学院,绵阳621010

出　　处：《人工晶体学报》2008年第6期1435-1439,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金资助项目(No.50472052);西南科技大学博士研究基金(07ZX0106)

摘　　要：采用底部冷却高温熔剂法(BCSG)成功地生长了BaTiO3改性PZNT91/9晶体,其中最大晶体(J3)尺寸达15mm×13mm,晶体呈浅黄色,箭头形。采用1～1.6L/min的氧气流速能有效引发成核,而且通过康泰尓电阻丝实现点冷,可以有效控制成核数目。XRD分析表明:添加BaTiO3的晶体为纯钙钛矿相,晶体显露面为{001}面,说明添加BaTiO3能有效抑制焦绿石相,促进钙钛矿相的形成。BaTiO3 doped PZNT91/9 crystals have been successfully grown oy nigh temperature method combined with bottom-cooled technique （BCSG）. The maximum size of crystal （J3） is up to 15 mm× 13 mm, Moreover the crystal is pale yellow and arrowlike. The nucleation of crystal can be effectively initiated by using 1-1.6 L/min oxygen, and the number of nucleation can be also effectively controlled by using Kangtaier resistance wire to realize point cold. Pure perovskite structure and the presence of cubic （100） face for BaTiO3 doped PZNT91/9 crystals were investigated by the XRD analysis. The results showed that the formation of pyrochlore phase was effectively inhibited, but the formation of perovskite phase was promoted,

关 键 词：BATIO 改性PZNT91/9晶体 底部冷却高温熔剂法 晶体形貌 X射线衍射 

分 类 号：O782[理学—晶体学]