Ferroelectric and Pyroelectric Properties of Nano Graded Ferroelectric Films

摘要：

In order to improve the properties of nano graded ferroelectric films (NGFF), the generalized GinzburgLandau-Denvonshire (GLD) theory is used to investigate the ferroelectric and pyroelectric properties of NGFF. A function is introduced to describe the local structure of this graded film. The numerical results show that parameter a and film thickness are two very important factors that influence the ferroelectric and pyroelectric properties of films, larger a values lead to smaller spontaneous polarization and lower pyroelectric peak Local structure in NGFF leads to flatten the polarization distribution, which raises the spontaneous polarization of components with lower transition temperature, but reduces spontaneous polarization of components with higher transition temperature.

关键词： ferroelectric film Curie temperature polarization pyroelectric

作者: Hui Chen Taimin heng

作者单位: Mathematics and physics department Shenyang University of Chemical Technology Shenyang, China

会议类型: 国际会议

会议名称: 2010 6th International Conference on MENS NANO,and Smart System(2010年微机电纳米、智能系统国际会议 ICMENS 2010)

会议地点: 长沙

会议语种:英文

页码: 13-16

在线出版日期: 2010-12-14（万方平台首次上网日期，不代表论文的发表时间）