J Mater Sci Technol ›› 2010, Vol. 26 ›› Issue (11): 981-985.

• Thin Film and Coatings • Previous Articles     Next Articles

Enhanced Ferroelectric Properties of Predominantly (100)-oriented Ca0:4Sr 0:6Bi4Ti4O15 Thin Films on Pt/Ti /SiO2/Si Substrates

Suhua Fan, Quande Che, Fengqing Zhang, Ran Yu and Wei Hu   

  1. College of Material Science and Engineering, Shandong Jianzhu University, Jinan 250101, China
  • Received:2009-09-21 Revised:2010-02-04 Online:2010-11-30 Published:2010-11-22
  • Contact: Suhua Fan
  • Supported by:

    the National Natural Science Foundation of China (Grant No. 50872075) and the Natural Science Foundation of Shandong Province, China (Grant No. Y2007F36)

Abstract: Predominantly (100)-oriented Ca0.4Sr0.6Bi4Ti4O15 (C0.4S0.6BTi) thin films were prepared on Pt(111)/Ti/SiO2/Si substrates by a sol-gel method at annealing temperatures ranging from 650°C to 850°C. The growth mode of the predominantly (100)-oriented C0.4S0.6BTi thin films fabricated by the sequential layer annealing method was discussed based on the structure evolution with the annealing temperature. The remnant polarization and coercive field of the C0.4S0.6BTi film annealed at 800°C are 16.1μC/cm2 and 85kV/cm, respectively. No evident fatigue can be observed after 109 switching cycles.

Key words: Ca0.4Sr0.6Bi4Ti4O15, Ferroelectric film, Orientation