Theoretical study on the influence of surface imperfections on the properties of ferroelectric thin films in first-order ferroelectric systems

Shan Lin, Tianquan Lü, Wenwu Cao

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A generalized Ginzburg-Landau-Devonshire (GLD) theory is used to study the properties of ferroelectric thin films sandwiched between two metal electrodes with a first-order phase transition. By taking into account the effect of the imperfect surface layer and a natural boundary condition, the temperature and film-thickness dependence of the spontaneous polarization and the dielectric susceptibility are calculated. The depolarization field makes the polarization distribution more uniform. In addition, an asymmetric hysteresis loop can be obtained due to the existence of asymmetrical imperfect surface layers.

Original languageEnglish (US)
Pages (from-to)2952-2961
Number of pages10
JournalPhysica Status Solidi (B) Basic Research
Volume243
Issue number12
DOIs
StatePublished - Oct 1 2006

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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