Electronic and optical properties of Bi3.25La0.75Ti3O12 and SrBi2-xNdxNb2O9 perovskite-type ferroelectric materials

Z. G. Hu; J. H. Chu

doi:10.1117/12.888426

18 February 2011 Electronic and optical properties of Bi_3.25La_0.75Ti₃O₁₂ and SrBi_2-xNd_xNb₂O₉ perovskite-type ferroelectric materials

Z. G. Hu, J. H. Chu

Author Affiliations +

Proceedings Volume 7995, Seventh International Conference on Thin Film Physics and Applications; 799504 (2011) https://doi.org/10.1117/12.888426
Event: Seventh International Conference on Thin Film Physics and Applications, 2010, Shanghai, China

Abstract

The phase transitions and the temperature dependent electronic properties of Bi_3.25La_0.75Ti₃O₁₂ (BLT) film have been studied by transmittance spectra from 80 to 480 K. Anomalies of the optical constants are observed at 160 K and 300 K, which can be ascribed to the phase transitions. The optical properties of SrBi_2-xNdxNb₂O₉ (SBNN) ceramics with the Nd concentrations from 0 to 0.2 have been investigated by Raman scattering spectra and spectroscopic ellipsometry. It can be found that the lattice vibrations slightly depend on the Nd concentrations. Moreover, the optical band gap linearly increases with the Nd concentrations due to charge compensation by the Nd doping.

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Z. G. Hu and J. H. Chu "Electronic and optical properties of Bi_3.25La_0.75Ti₃O₁₂ and SrBi_2-xNd_xNb₂O₉ perovskite-type ferroelectric materials", Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 799504 (18 February 2011); https://doi.org/10.1117/12.888426

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