Optical interband transitions in [111] poled relaxor-based ferroelectric 0.24Pb(In1/2Nb1/2)O-3-(0.76-x)Pb(Mg1/3Nb2/3)O-3-xPbTiO(3) single crystal

作者：Wu Fengmin; Yang Bin; Sun Enwei; Wang Zhu; Yin Yongqi; Pei Yanbo; Yang Wenlong; Cao Wenwu^*

来源：Journal of Materials Science, 2012, 47(6): 2818-2822.

DOI：10.1007/s10853-011-6110-7

Optical transmission spectra of single crystal 0.24Pb(In1/2Nb1/2)O-3-(0.76-x)Pb(Mg1/3Nb2/3)O-3-xPbTiO(3)(x = 0.27, 0.33) were measured in the pseudo-cubic crystallographic directions [111] and [112]. Ferroelectric domain structures were observed in order to explain the difference of transmittance for the two composition crystals. Wavelength dependence of the absorption coefficients was measured and the optical energy band gaps were calculated for both direct and indirect transitions, which are E (gd) = 3.09-3.18 eV and E (gi) = 2.89-2.96 eV, respectively, and the phonon energy is E (p) = 0.07-0.08 eV. The transmission spectra were explained by the refractive indices and extinction coefficients measured by spectroscopic ellipsometry.

• 出版日期2012-3
• 单位哈尔滨工业大学; 哈尔滨学院