Enhancement of ferroelectricity in the compositionally graded (Pb,Sr)TiO3 thin films derived by a sol-gel process

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Jiwei Zhai
  • Xi Yao
  • Zhengkui Xu
  • Haydn Chen

Detail(s)

Original languageEnglish
Pages (from-to)37-41
Journal / PublicationJournal of Crystal Growth
Volume286
Issue number1
Publication statusPublished - 1 Jan 2006

Abstract

The compositionally graded Pb1-xSr xTiO3 (PST) films with a fine compositional gradient from Pb0.6Sr0.4TiO3 to Pb0.3Sr 0.7TiO3 were fabricated on LNO-buffered Pt/Ti/SiO 2/Si substrates by a sol-gel deposition method. The graded films crystallized into a pure perovskite structure and exhibited highly (1 0 0) preferred orientation after post-deposition annealing. Dielectric and ferroelectric properties were investigated as a function of temperature, frequency and direct current bias field. Dielectric constant peaks, common to a ferroelectric transition, were not observed in the temperature range of 25-250 °C within which the dielectric constant showed weak temperature dependence. This compositionally graded thin film can result in a dielectric constant more than double and a remanent polarization at least two and a half times larger than conventional PST thin films. © 2005 Elsevier B.V. All rights reserved.

Research Area(s)

  • A1. Characterization, A3. Polycrystalline deposition, B1. Inorganic compounds, B2. Ferroelectric materials

Citation Format(s)

Enhancement of ferroelectricity in the compositionally graded (Pb,Sr)TiO3 thin films derived by a sol-gel process. / Zhai, Jiwei; Yao, Xi; Xu, Zhengkui et al.
In: Journal of Crystal Growth, Vol. 286, No. 1, 01.01.2006, p. 37-41.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review