Composition dependence of zBiFeO3-(1-z)PbTiO3 films prepared by sol-gel technique

摘要：

Bismuth ferrite and lead titanate composite multiferroic films (xBiFeO3-(1-x)PbTiO3, BFO-PT films) were deposited on Pt/Ti/SiO2/Si substrates by sol-gel method. In this report, the value of x varies from 0.5 to 0.8. The composition dependence (dependence of x) of BFO-PT films is studied. X-ray diffraction analysis reveals that all films are well crystallized in tetragonal phase. It discovers that enhanced ferroelectricity and decreased coercive field can be obtained by reducing the content of BFO (decreasing x). Film for x=0.7 shows the optimized properties, with a very low leakage density about 3.3 ×10-7 A/cm2 at 100kV/cm, maintaining the values of remanent polarization of 35.5 μC/cm2 and coercive field of 165 kV/cm at 680 kv/cm at room temperature.

作者: Bingrong Yuan Shengwen Yu Wufeng Yang Xiaowen Zhou Jinrong Cheng

作者单位: School of Materials Science and Engineering,Shanghai University,No.149,Yanchang Road,Shanghai 200072,China

会议类型: 国际会议

会议名称: 2009 The 18th IEEE International Symposium on Applications of Ferroelectrics(2009年国际铁电学暨IEEE国际铁电应用联合会议)

会议地点: 西安

会议语种:英文

页码: 314-317

在线出版日期: 2009-08-23（万方平台首次上网日期，不代表论文的发表时间）