Crystallization kinetics of sol-gel-derived (1-x)SrBi2Ta2O9-xBi3 TiTaO9 ferroelectric thin films

Woo Chul Kwak, Yun Mo Sung

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The crystallization kinetics of Sr0.7Bi2.3Ta2O9 (SBT) and 0.7SrBi2Ta2O9-0.3Bi3 TiTaO9 (SBT-BTT) thin films formed by the sol-gel and spin coating techniques were studied. Phase formation and crystal growth are greatly affected by the film composition and crystallization temperature. Isothermal kinetic analysis was performed on the x-ray diffraction results of the thin films heated in the range of 730 to 760 °C at 10 °C intervals. Activation energy and Avrami exponent values were determined for the fluorite-to-Aurivillus phase transformation. A reduction of approximately 51 kJ/mol in activation energy was observed for the SBT-BTT thin films, and an Avrami exponent value of approximately 1.0 was obtained for both the SBT and SBT-BTT. A comparison is made, and the possible crystallization mechanism is discussed.

Original languageEnglish
Pages (from-to)1463-1468
Number of pages6
JournalJournal of Materials Research
Volume17
Issue number6
DOIs
Publication statusPublished - 2002 Jun

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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