Optical properties of ferroelectric Bi4 Ti3 O 12

David J. Singh, Sung Seok A. Seo, Ho Nyung Lee

Research output: Contribution to journalArticlepeer-review

93 Scopus citations

Abstract

We report optical properties of ferroelectric Bi4 Ti3 O12 based on spectroscopic ellipsometry and calculations with the recently developed density functional of Tran and Blaha. We find a close accord between the experiment and the calculated results with this functional, including the energy onset of optical transitions and the scale of the optical conductivity. The band gap is indirect, with a value of 2.9 eV, and an onset of direct optical transitions at 3.1 eV.

Original languageEnglish
Article number180103
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume82
Issue number18
DOIs
StatePublished - Nov 15 2010

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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