TY - JOUR
T1 - Temperature-dependent lattice dynamics and electronic transitions in 0.93 Pb(Zn1/3Nb2/3) O3-0.07 PbTiO3 single crystals
T2 - Experiment and theory
AU - Zhang, Jinzhong
AU - Tong, Wen Yi
AU - Zhu, Jiajun
AU - Xu, Jiayue
AU - Duan, Zhihua
AU - Xu, Liping
AU - Hu, Zhigao
AU - Duan, Chun Gang
AU - Meng, Xiangjian
AU - Zhu, Ziqiang
AU - Chu, Junhao
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/2/4
Y1 - 2015/2/4
N2 - The lattice dynamics and electronic transitions of 0.93Pb(Zn1/3Nb2/3)O3-0.07PbTiO3 (PZN-7%PT) single crystal have been investigated by means of temperature dependence polarized Raman scattering and ellipsometric spectra. The rhombohedral-tetragonal and tetragonal-cubic transformations as well as intermediate temperature are extracted based on the locations, intensity, and linewidths of Raman modes in different geometries. Moreover, the redshift behavior of the electronic transition at about 3.7 eV as a function of temperature follows the Bose-Einstein law. Interestingly, the dramatically different optical responses of PZN-7%PT below 3.7 eV during the phase transitions can be observed experimentally and explained by the first-principles calculations, which reveal the potential application of no-contact optical methods in judging the phase transformations and symmetries of ferroelectric crystals.
AB - The lattice dynamics and electronic transitions of 0.93Pb(Zn1/3Nb2/3)O3-0.07PbTiO3 (PZN-7%PT) single crystal have been investigated by means of temperature dependence polarized Raman scattering and ellipsometric spectra. The rhombohedral-tetragonal and tetragonal-cubic transformations as well as intermediate temperature are extracted based on the locations, intensity, and linewidths of Raman modes in different geometries. Moreover, the redshift behavior of the electronic transition at about 3.7 eV as a function of temperature follows the Bose-Einstein law. Interestingly, the dramatically different optical responses of PZN-7%PT below 3.7 eV during the phase transitions can be observed experimentally and explained by the first-principles calculations, which reveal the potential application of no-contact optical methods in judging the phase transformations and symmetries of ferroelectric crystals.
UR - https://www.scopus.com/pages/publications/84922327100
U2 - 10.1103/PhysRevB.91.085201
DO - 10.1103/PhysRevB.91.085201
M3 - 文章
AN - SCOPUS:84922327100
SN - 1098-0121
VL - 91
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 8
M1 - 085201
ER -