钛酸锶钡陶瓷的结构及介电规律研究  

Study on structural and dielectric law of barium strontium titanate ceramics

作　　者：乔自文[1] 房美玉[2,3] 路大勇[3] 刘巧丽[3,4] 

机构地区：[1]吉林省电子信息产品监督检验研究院试验中心,吉林长春130021 [2]长春正海汽车内饰件有限公司技术质量部,吉林长春130013 [3]吉林化工学院材料科学与工程研究中心,吉林吉林132022 [4]吉林大学物理学院,吉林长春130021

出　　处：《吉林化工学院学报》2011年第1期8-10,共3页Journal of Jilin Institute of Chemical Technology

基　　金：吉林省科技发展计划资助项目(20100532)

摘　　要：采用冷压陶瓷技术制备了(Ba1-xSrx)TiO3(x=0.15,0.20,0.25,0.30,0.35)陶瓷.研究了烧结温度的提高对陶瓷结构及介电规律的影响.研究表明:30℃烧结温度的提高使该系列陶瓷能在x=0.35后从四方相进入立方相.介电峰移动率为-3.2℃/%Sr.x=0.35样品的介电峰发生在室温附近,室温介电常数在8 000左右,室温介电损耗降至0.04以下,适合于高介电材料的应用.The cold-pressing technique was adopted to prepare（Ba1-xSrx） TiO3（x = 0.15,0.20,0.25,0.30,0.35） ceramics.The effect of increasing sintering temperature on structural and dielectric law of the ceramics was studied.The results show that rising of sintering temperature by 30℃ makes the ceramic structure change from tetragonal to cubic phase at x=0.35.The shifting rate of dielectric peak is-3.2℃/%Sr.The dielectric peak for the sample with x=0.35 occurs in the vicinity of room temperature,room-temperature dielectric constant and loss are about 8000 and below 0.04 respectively.The ceramic with x=0.35 is appropriate for the application of dielectric materials.

关 键 词：钛酸锶钡 结构相变 介电性质 

分 类 号：O614.23[理学—无机化学]