Fluorite-to-Aurivillius phase transformation kinetics in sol-gel derived SBT thin films

Yun Mo Sung, Woo Chul Kwak

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

SBT films with different thickness were fabricated using a sol-gel processing and spin coating. The as-coated films were heated at 600 °C for the crystallization to fluorite and then further heated at 740-770 °C for the phase transformation to Aurivillius. It was found that the phase transformation kinetics apparently increased with thickness up to ∼390 nm, and then it decreased above this value. The Johnson-Mehl-Avrami (JMA) isothermal kinetics analyses showed the dependence of nucleation and crystal growth modes on the film thickness. From the Arrhenius plots the activation energy values for the phase transformation were determined for SBT films with different thickness.

Original languageEnglish
Pages (from-to)389-394
Number of pages6
JournalChemical Physics Letters
Volume411
Issue number4-6
DOIs
Publication statusPublished - 2005 Aug 15

Fingerprint

Fluorspar
fluorite
Sol-gels
phase transformations
Phase transitions
gels
Crystallization
Thin films
Kinetics
kinetics
thin films
Arrhenius plots
Spin coating
Film thickness
coating
crystal growth
Nucleation
film thickness
Activation energy
plots

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces
  • Condensed Matter Physics

Cite this

Fluorite-to-Aurivillius phase transformation kinetics in sol-gel derived SBT thin films. / Sung, Yun Mo; Kwak, Woo Chul.

In: Chemical Physics Letters, Vol. 411, No. 4-6, 15.08.2005, p. 389-394.

Research output: Contribution to journalArticle

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