Kinetic analysis of PbTiO3 phase formation via diffusion couple method

Yun Mo Sung, Woo Chul Kwack

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

A detail kinetic analysis was performed on the PbTiO3 phase formation reaction occurring via PbO-TiO2 diffusion couple experiments. The diffusion model of Pb2+ and O2- ions was used to derive the kinetics equation of PbTiO3 phase formation reaction. From the parabolic kinetics between the thickness of PbTiO3 layer and time, the reaction rate constant for PbTiO3 formation was determined to be a function of the average diffusion coefficient of Pb2+ ions. By substituting the diffusion couple experimental results into the present kinetics equation, average diffusion coefficient values of Pb2+ ions in PbTiO3 layer were calculated according to temperature values. The activation energy value for the diffusion of Pb2+ ions was estimated for PbTiO3 formation using Arrhenius plot and the equation for the diffusion coefficient of Pb2+ ions was determined.

Original languageEnglish
Pages (from-to)F751-F756
JournalMaterials Research Society Symposium - Proceedings
Volume666
DOIs
Publication statusPublished - 2001
EventTransport and Microstructural Phenomena in Oxide Electronics - San Francisco, CA, United States
Duration: 2001 Apr 162001 Apr 20

ASJC Scopus subject areas

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

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