Optical properties of ferroelectric Bi4 Ti3 O 12

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

doi:10.1103/PhysRevB.82.180103

Optical properties of ferroelectric Bi₄ Ti₃ O ₁₂

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

Materials Science and Technology Div

Research output: Contribution to journal › Article › peer-review

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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 language	English
Article number	180103
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.82.180103
State	Published - Nov 15 2010

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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.",

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N2 - 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.

AB - 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.

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Optical properties of ferroelectric Bi₄ Ti₃ O ₁₂

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