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Optical Dispersion Behavior and Band Gap Energy of Relaxor Ferroelectric 0.92Pb(Mgl/3Nb2/3)O3-0.08PbTiO3 Single Crystal 下载免费PDF全文
Refractive indices and extinction coefficients of O.92Pb(Mgl/3Nb2/3)O3-O.O8PbTiO~(PMN-O.OSPT) single crystaJ are investigated by variable angle spectroscopic ellipsometry (VASE) at different wavelengths. The parameters relative to the energy band structure are obtained by fitting to the single-oscillator dispersion equation, and the band gap energy is also deduced from the Tauc equation. Similar to most oxygen-octahedra ferroelectries, PMN-O.OSPT has the same dispersion behavior described by the refractive-index dispersion parameters. 相似文献
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