Influence of imperfect surface layers on dielectric and pyroelectric properties of ferroelectric thin film

Hui Chen, Tianquan Lü, Wenwu Cao

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Using the Ginzburg-Laudau-Devonshire theory and taking into account structural difference between imperfect surface layers and bulk ferroelectrics, the dielectric and pyroelectric properties of ferroelectric thin films coated with two metallic electrodes have been studied. The numerical results show that the effects of imperfect surface layers are to increase the effective dielectric susceptibility at room temperature through lowering the phase transition temperature. Both the dielectric susceptibility peak and pyroelectric coefficient peak shift to lower temperatures due to the contribution of the imperfect surface layers. The incompletely screened non-uniform depolarization field makes the susceptibility distribution more uniform.

Original languageEnglish (US)
Pages (from-to)177-181
Number of pages5
JournalPhysica B: Condensed Matter
Volume373
Issue number2
DOIs
StatePublished - Mar 15 2006

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Influence of imperfect surface layers on dielectric and pyroelectric properties of ferroelectric thin film'. Together they form a unique fingerprint.

Cite this