无铅压电纳米晶的制备研究  

STUDY OF NANOCRYSTALLINE Na_ (0.5)Bi_(0.5)TiO_3 PREPARED BY METALORGANIC DECOMPOSITION METHOD

作　　者：彭祖健[1] 张寅[1] 

机构地区：[1]山东教育学院数理学系,济南250013

出　　处：《山东师范大学学报（自然科学版）》2004年第3期31-33,共3页Journal of Shandong Normal University(Natural Science)

基　　金：国家自然科学基金资助项目 ( 60 3 770 41)

摘　　要：我们采用MOD方法成功地制备了钛酸铋钠 (NBT)无铅压电纳米晶 ,用DTA ,TG对原粉形成纳米晶过程进行分析 ,用XRD ,TEM对纳米晶进行表征 ,用谢乐 (Scherrer)公式计算了晶粒的尺度 ,并对其介电性质进行了研究 .结果表明 80 0℃下得到钙钛矿结构的NBT ,其尺度在纳米范围 ,介电性质体现出纳米效应 .Na 0.5Bi 0.5TiO 3 nanopowders were synthesized by matalorganic decomposition technique.After annealing at 800 ℃ for 10 min,pure Na 0.5Bi 0.5TiO 3 nanocrystals with perovskite structure were obtained.The synthesis processes and characteristic of the powers were investigated by differential thermal analysis and thermorgravimetric analysis (DTA-TGA),X-ray diffraction(XRD) and transmission electron microscope (TEM).It was found that there was a peak in the curve of dielectric loss response as a function of frequency,which shows the nano-effect.

关 键 词：MOD 纳米晶 钛酸铋钠 

分 类 号：O484[理学—固体物理]