中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 22 No. 9 September 2012 |
（1. Faculty of Science, Hunan Institute of Engineering, Xiangtan 411105, China;
2. Key Laboratory for Low Dimensional Materials and Application Technology of Ministry of Education,
Xiangtan University, Xiangtan 411105, China）
Abstract:Bi0.9La0.1Fe0.95Mn0.05O3 (BLFMO) ferroelectric thin films were fabricated on Pt/Ti/SiO2/Si/ substrates by the sol-gel process at different pyrolysis temperatures. The mass loss of BLFMO powder was investigated by thermo gravimetry analyser (TGA), and the polycrystalline structure and smooth surface of BLFMO thin films were characterized by X-ray diffraction (XRD) and atomic force microscopy (AFM), respectively. The remnant polarization (Pr) of the BLFMO films pyrolyzed at 420 °C is 21.2 μC/cm2 at the coercive field (Ec) of 99 kV/cm and the leakage current density is 7.1×10-3 A/cm2, which indicates that the BLFMO thin films display relatively good ferroelectric property at this temperature.
Key words: BLFMO thin films; thermogravimetry analysis; pyrolysis temperature; ferroelectrics
