Composition dependence of dielectric function in ferroelectric BaCo xTi1-xO3 films grown on quartz substrates by transmittance spectra

Z. G. Hu; Y. W. Li; M. Zhu; Z. Q. Zhu; J. H. Chu

doi:10.1063/1.2870094

Composition dependence of dielectric function in ferroelectric BaCo _xTi_1-xO₃ films grown on quartz substrates by transmittance spectra

Z. G. Hu^*
, Y. W. Li
, M. Zhu
, Z. Q. Zhu
, J. H. Chu

^*Corresponding author for this work

School of Physics and Electronic Science

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

32 Scopus citations

Abstract

Near-infrared-ultraviolet optical properties of Ba Cox Ti1-x O3 (BCT) (x from 1.0% to 10%) films have been investigated by the transmittance spectra. The dispersion functions in the photon energy range of 1.24-6.2 eV have been extracted by fitting the experimental data with Adachi's model. It was found that the oscillator and dispersion energies linearly increase with the Co composition and the maximum optical transition occurs near the energy range of 4.3-5.0 eV for the BCT materials. The absorption coefficient at the visible region linearly increases with the composition due to grain boundaries and disorder induced band tail into the forbidden gap.

Original language	English
Article number	081904
Journal	Applied Physics Letters
Volume	92
Issue number	8
DOIs	https://doi.org/10.1063/1.2870094
State	Published - 2008

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title = "Composition dependence of dielectric function in ferroelectric BaCo xTi1-xO3 films grown on quartz substrates by transmittance spectra",

abstract = "Near-infrared-ultraviolet optical properties of Ba Cox Ti1-x O3 (BCT) (x from 1.0\% to 10\%) films have been investigated by the transmittance spectra. The dispersion functions in the photon energy range of 1.24-6.2 eV have been extracted by fitting the experimental data with Adachi's model. It was found that the oscillator and dispersion energies linearly increase with the Co composition and the maximum optical transition occurs near the energy range of 4.3-5.0 eV for the BCT materials. The absorption coefficient at the visible region linearly increases with the composition due to grain boundaries and disorder induced band tail into the forbidden gap.",

author = "Hu, \{Z. G.\} and Li, \{Y. W.\} and M. Zhu and Zhu, \{Z. Q.\} and Chu, \{J. H.\}",

year = "2008",

doi = "10.1063/1.2870094",

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volume = "92",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

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T1 - Composition dependence of dielectric function in ferroelectric BaCo xTi1-xO3 films grown on quartz substrates by transmittance spectra

AU - Hu, Z. G.

AU - Li, Y. W.

AU - Zhu, M.

AU - Zhu, Z. Q.

AU - Chu, J. H.

PY - 2008

Y1 - 2008

N2 - Near-infrared-ultraviolet optical properties of Ba Cox Ti1-x O3 (BCT) (x from 1.0% to 10%) films have been investigated by the transmittance spectra. The dispersion functions in the photon energy range of 1.24-6.2 eV have been extracted by fitting the experimental data with Adachi's model. It was found that the oscillator and dispersion energies linearly increase with the Co composition and the maximum optical transition occurs near the energy range of 4.3-5.0 eV for the BCT materials. The absorption coefficient at the visible region linearly increases with the composition due to grain boundaries and disorder induced band tail into the forbidden gap.

AB - Near-infrared-ultraviolet optical properties of Ba Cox Ti1-x O3 (BCT) (x from 1.0% to 10%) films have been investigated by the transmittance spectra. The dispersion functions in the photon energy range of 1.24-6.2 eV have been extracted by fitting the experimental data with Adachi's model. It was found that the oscillator and dispersion energies linearly increase with the Co composition and the maximum optical transition occurs near the energy range of 4.3-5.0 eV for the BCT materials. The absorption coefficient at the visible region linearly increases with the composition due to grain boundaries and disorder induced band tail into the forbidden gap.

UR - https://www.scopus.com/pages/publications/40049106832

U2 - 10.1063/1.2870094

DO - 10.1063/1.2870094

M3 - 文章

AN - SCOPUS:40049106832

SN - 0003-6951

VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

M1 - 081904

ER -

Composition dependence of dielectric function in ferroelectric BaCo _xTi_1-xO₃ films grown on quartz substrates by transmittance spectra

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