The effect of annealing atmosphere on electrical properties of BST thin films prepared on copper foils

摘要：

Ba0.7Sr0.3TiO3 (BST) thin films have been prepared on copper foils via sol-gel method in almost inert atmosphere containing different level of oxygen which was achieved by flowing high purified argon with the varied rate from 0.3 L/min to 2.0 L/min. X-ray diffraction pattern of the BST thin film exhibits dominant perovskite phase. SEM images reveal good crystallization and much dense structure of the thin film. The BST thin film annealed at almost inert atmosphere by flowing the high purified argon at the rate of 0.5 L/min, exhibits highest dielectric constants which are 1549.65 and 1350.86 at the frequency of 10 kHz and 1 MHz, respectively. Additionally, the film also shows optimized ferroelectric behavior and low leakage current density. The mechanism of the annealing atmosphere on properties of BST thin films was investigated.

关键词： thin films copper foils sol-gel electrical properties

作者: Yanhua Fan Shuhui Yu Shuaiqin Yu Lihua Dong Weike Zhang Yansheng Yin

作者单位: Institute of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai 200135 Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518067, China Institute of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai 200135 Institute of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China

会议类型: 国际会议

会议名称: 第二届多功能材料与结构国际会议

会议地点: 青岛

会议语种:英文

页码: 831-834

在线出版日期: 2009-10-09（万方平台首次上网日期，不代表论文的发表时间）