Journal of Shanghai University(Natural Science Edition)

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BiFeO3 Thin Films Fabricated by Sol-gel Method and Its Thickness Dependence

YU Sheng-wen,CAI Jin-yu,YAN Yun-fei,CHENG Jin-rong
  

  1. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
  • Received:2008-05-04 Revised:1900-01-01 Online:2008-10-23 Published:2008-10-23
  • Contact: YU Sheng-wen

Abstract:

BiFeO3 thin films with different layers/thicknesses were fabricated on Pt(111)/Si(100) substrates by sol-gel method. XRD results indicate that a phase transition from pseudocubic to rhombohedral might happen between the films with thicknesses of 4 layers/200 nm and 8 layers/400 nm. With increasing thickness, the films exhibit better crystallinity and dielectric properties. Meanwhile, insulation and ferroelectricy are improved as well.

Key words: film, sol-gel, thickness, BiFeO3

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