Topotactic phase transformation of the brownmillerite SrCoO2.5 to the perovskite SrCoO3-δ

H. Jeen, W. S. Choi, J. W. Freeland, H. Ohta, C. U. Jung, H. N. Lee

Research output: Contribution to journalArticlepeer-review

219 Scopus citations

Abstract

Pulsed laser epitaxy of brownmillerite SrCoO2.5 thin films and their phase transformation to the perovskite SrCoO3-δ are investigated. While the direct growth of the fully oxidized perovskite films is found to be an arduous task, filling some of oxygen vacancies into SrCoO 2.5 by topotactic oxidation accompanies systematic evolution of electronic, magnetic, and thermoelectric properties, useful for many information and energy technologies.

Original languageEnglish
Pages (from-to)3651-3656
Number of pages6
JournalAdvanced Materials
Volume25
Issue number27
DOIs
StatePublished - Jul 19 2013

Keywords

  • brownmillerite
  • cobaltite
  • pulsed laser epitaxy
  • topotactic phase transformation

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