TY - JOUR
T1 - Optical interband transitions in [111] poled relaxor-based ferroelectric 0.24Pb(In 1/2Nb 1/2)O 3-(0.76 - X)Pb(Mg 1/3Nb 2/3)O 3-xPbTiO 3 single crystal
AU - Wu, Fengmin
AU - Yang, Bin
AU - Sun, Enwei
AU - Wang, Zhu
AU - Yin, Yongqi
AU - Pei, Yanbo
AU - Yang, Wenlong
AU - Cao, Wenwu
N1 - Funding Information:
Acknowledgements This research was supported by the NIH under Grant No. P41-EB21820, the National Nature Science Foundation of China under Grant No. 10704021 and H. C. Materials Inc.
PY - 2012/3
Y1 - 2012/3
N2 - Optical transmission spectra of single crystal 0.24Pb(In 1/2Nb 1/2)O 3-(0.76 - x)Pb(Mg 1/3Nb 2/3)O 3-xPbTiO 3 (x = 0.27, 0.33) were measured in the pseudo-cubic crystallographic directions [111] and [11 $$ \overline{2} $$ ]. 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.
AB - Optical transmission spectra of single crystal 0.24Pb(In 1/2Nb 1/2)O 3-(0.76 - x)Pb(Mg 1/3Nb 2/3)O 3-xPbTiO 3 (x = 0.27, 0.33) were measured in the pseudo-cubic crystallographic directions [111] and [11 $$ \overline{2} $$ ]. 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.
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U2 - 10.1007/s10853-011-6110-7
DO - 10.1007/s10853-011-6110-7
M3 - Article
C2 - 25170190
AN - SCOPUS:84857652111
SN - 0022-2461
VL - 47
SP - 2818
EP - 2822
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 6
ER -