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Low temperature preparation and electric properties of highly (100)-oriented Pb0.8 La0.1Ca0.1Ti 0.975O3 thin films prepared by a sol-gel route

  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Highly (100)-oriented Pb0.8La0.1Ca 0.1Ti0.975O3 (PLCT) thin films deposited on Pt/Ti/SiO2/Si substrate were successfully achieved by a sol-gel route. The influence of annealing temperature on microstructures and electric properties was investigated; it was found that the PLCT film could be crystallized only at 450 °C. When the annealing temperature increased to 500 °C, the PLCT film exhibited highly (100)-oriented, which also possessed higher remnant polarization Pr (27 μC/cm2) and better pyroelectric figure of merit (F d = 205 μC/m2k) at room temperature. It was also found too high annealing temperature (625 °C) could lead to recrystallization of film, and the small grains caused by recrystallization could make polarization reversal difficult and disturbed the preferred crystal growth in film, which was not benefit to obtain enhanced electric properties.

Original languageEnglish
Pages (from-to)286-291
Number of pages6
JournalJournal of Sol-Gel Science and Technology
Volume54
Issue number3
DOIs
StatePublished - Jun 2010
Externally publishedYes

Keywords

  • Electric properties
  • Low-temperature growth
  • Orientation
  • PLCT thin films

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