六方相Mn掺杂钛酸钡陶瓷的制备及结构表征  

Preparation and structural Characterization of Mn-doped BaTiO_3 Ceramics with Hexagonal Phase

作　　者：刘巧丽 刘军伟[1,2] 杨爱宏 路大勇[1,2] 

机构地区：[1]吉林化工学院材料科学与工程学院,吉林吉林132022 [2]吉林化工学院材料科学与工程研究中心,吉林吉林132022

出　　处：《吉林化工学院学报》2018年第1期47-50,共4页Journal of Jilin Institute of Chemical Technology

摘　　要：采用冷压陶瓷技术,在1 400℃/12 h烧结条件下制备了Ba(Ti1-xMnx)O_3(x=0.06~0.09)陶瓷.利用室温XRD研究钛锰酸钡陶瓷的晶体结构,通过SEM样品微观形貌.XRD测试结果表明:当x≥0.06时,Ba(Ti1-xMnx)O_3陶瓷表现为六方结构,进入到Ti^(4+)位的Mn^(3+)所引起的Jahn-Teller效应是六方相形成的驱动力.SEM图中观察到的棒状晶粒与六方相对应.Ba(Ti_(1-x)Mn_x)O_3 ceramics were prepared for x = 0. 06,0. 07,0. 08 and 0. 09 using a cold-pressing ceramic technique. The crystal structure and microstructure of Ba(Ti1-xMnx)O_3 ceramics were investigated using X-ray diffraction and scanning electron microscopy. The XRD results showed that Ba(Ti1-xMnx)O_3 exhibited a hexagonal structure as x≥0.06,and Jahn-Teller distortion caused by the was a driving force for the hexagonal phase.Columnar grain morphology observed was assigned to the hexagonal phase.

关 键 词：钛酸钡 锰掺杂 六方相 JAHN-TELLER效应 

分 类 号：O614.23[理学—无机化学]