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Growth and properties of SrBi2TaNbO9 ferroelectric thin films using pulsed laser deposition

  • Pingxiong Yang*
  • , Hongmei Deng
  • , Meirong Shi
  • , Ziyang Tong
  • , Sumei Qin
  • *Corresponding author for this work
  • Shanghai University
  • East China Normal University

Research output: Contribution to journalArticlepeer-review

Abstract

High quality SrBi2TaNbO9 (SBTN) ferroelectric thin films were fabricated on platinized silicon by pulsed laser deposition. Microstructure and ferroelectric properties of the films were characterized. Optical fatigue (light/bias) for the thin films was studied and the average remanent polarization dropped by nearly 55% due to the bias/illumination treatment. Optical properties of the thin films were studied by spectroscopic ellipsometry (SE) from the ultraviolet to the infrared region. Optical constants, n ∼ 0.16 in the infrared region and n ∼ 2.12 in the visible spectral region, were determined through refractive index functions. The band gap energy is estimated to be 3.93 eV.

Original languageEnglish
Pages (from-to)99-102
Number of pages4
JournalMaterials Science and Engineering: B
Volume137
Issue number1-3
DOIs
StatePublished - 25 Feb 2007

Keywords

  • Ferroelectric
  • PLD
  • Thin films

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