期刊
APPLIED PHYSICS LETTERS
卷 101, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4733683
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资金
- Major State Basic Research Development Program of China [2011CB922200]
- Natural Science Foundation of China [11074076, 60906046]
- Projects of Science and Technology Commission of Shanghai Municipality [11520701300, 10DJ1400201, 10SG28]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
The structure-related optical response of (Pb1-1.5xLax)(Zr0.42Sn0.40Ti0.18)O-3 (100x/42/40/18) ceramics with different compositions has been investigated. Based on x-ray diffraction, the phase transition from rhombohedral to tetragonal structure is revealed between compositions of x = 2.6% and 2.8% near morphotropic phase boundary (MPB). Correspondingly, abnormal spectral response in the photon energy from 1.4 to 6.1 eV is observed near MPB. Furthermore, the blue shift of the two critical points related parameters, which is obtained from fitting the reflectance spectra, indicates that the variation of electronic band structure near MPB is responsible for the anomalous behavior. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4733683]
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