纳米晶粉体加入量对CSBT陶瓷厚膜结构及性能的影响  

Effect of Nano-crystal Powders Content on Structure and Properties of Calcium Strontium Bismuth Titanium Ceramic Thick Films

作　　者：范素华[1] 马建平[1] 张丰庆[1] 车全德[1] 于冉[1] 

机构地区：[1]山东建筑大学材料科学与工程学院,济南250101

出　　处：《人工晶体学报》2010年第2期500-503,共4页Journal of Synthetic Crystals

基　　金：国家自然科学基金(No.50872075);山东省自然科学基金(Y2007F36)

摘　　要：采用粉末溶胶法和快速层层退火工艺,在Pt/Ti/SiO2/Si基片上制备了钙锶铋钛(CSBT)陶瓷厚膜。研究了纳米晶粉体加入量对钙锶铋钛陶瓷厚膜结构及性能的影响。结果表明:纳米晶粉体加入量在较宽的范围内可以制备出高质量的钙锶铋钛厚膜,厚膜的显微结构及铁电性能对粉末的加入量比较敏感,适当的加入量有利于促使厚膜晶粒的a轴择优取向,从而有利于膜的铁电性能。当粉末加入量为7.5 g/100 mL时,钙锶铋钛陶瓷厚膜晶粒出现a轴择优取向,剩余极化和矫顽场强分别为6.3μC/cm2和57 kV/cm,具有较高的应用价值。Calcium strontium bismuth titanium ceramic thick films（CSBT） were prepared on Pt/Ti/SiO2/Si substrates by powder-sol method and layered rapid annealing process.The effect of nano-crystal powders content on structure and properties of CSBT thick films were studied.The results indicated that high quality CSBT thick films can be prepared in a wide range of the amount of nano-crystal powders,but the thick-film microstructure and ferroelectric properties are sensitive to the amount of nano-crystal powders,and suitable amount of nano-crystal powders is propitious to the a preferred orientation and ferroelectric properties of CSBT thick films.When the addition of powders is 7.5 g/100 mL,the remnant polarization and coercive field are 6.3 μC/cm^2 and 57 kV/cm,respectively.

关 键 词：粉末溶胶法 钙锶铋钛 铁电厚膜 铁电性能 

分 类 号：TM223[一般工业技术—材料科学与工程]