TY - JOUR
T1 - Optical properties of ferroelectric Bi4 Ti3 O 12
AU - Singh, David J.
AU - Seo, Sung Seok A.
AU - Lee, Ho Nyung
PY - 2010/11/15
Y1 - 2010/11/15
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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U2 - 10.1103/PhysRevB.82.180103
DO - 10.1103/PhysRevB.82.180103
M3 - Article
AN - SCOPUS:78649691610
SN - 1098-0121
VL - 82
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 18
M1 - 180103
ER -