Structural, optical spectroscopy, optical conductivity and dielectric properties of BaTi0.5(Fe0.33W0.17)O3 perovskite ceramic
Fe and W co-substituted BaTiO 3 perovskite ceramics, compositional formula BaTi 0.5 (Fe 0.33 W 0.17 )O 3 , were synthesized by the standard solid-state reaction method and studied by X-ray diffraction, scanning electron microscopy and spectroscopy ellipsometry. The prepared sample remains as double...
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Published in | Bulletin of materials science Vol. 39; no. 7; pp. 1765 - 1774 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Bangalore, India
Indian Academy of Sciences
01.12.2016
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Fe and W co-substituted BaTiO
3
perovskite ceramics, compositional formula BaTi
0.5
(Fe
0.33
W
0.17
)O
3
, were synthesized by the standard solid-state reaction method and studied by X-ray diffraction, scanning electron microscopy and spectroscopy ellipsometry. The prepared sample remains as double phases with the perovskite structure. The structure refinement of BaTi
0.5
(Fe
0.33
W
0.17
)O
3
sample was performed in the cubic double and hexagonal setting of the
Fm
3
̄
m
and P6
3
/
mmc space groups. Spectral dependence of optical parameters; real and imaginary parts of the dielectric function, refractive index, extinction coefficient and absorption coefficient were carried out in the range between 1.4 and 4.96 eV by using the ellipsometry experiments. Direct bandgap energy of 4.36 eV was found from the analysis of absorption coefficient
vs.
photon energy. In addition, the oscillator energy, dispersion energy and zero-frequency refractive index values were found from the analysis of the experimental data using Wemple–DiDomenico single-effective-oscillator model. |
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ISSN: | 0250-4707 0973-7669 |
DOI: | 10.1007/s12034-016-1305-9 |