Abstract
In the previous years the ferroelectrics perovskites has shown an increase in the study for optical applications. What do materials take advantage of, the so-called soft or hard dopants? In this work we try to clarify some of these aspects analyzing a classic perovskite-type structure system like Pb 0.95 Sr 0.05(Zr 0.53 Ti 0.47)1−y Cr y O 3−y/2 (PSZTC) andPb 1−3x/2 La x (Zr 0.53 Ti 0.47)1−y Nb y O 3−y/2 (PLZTN), hard and soft respectively. Photoluminescence, optical absorption spectroscopy, Raman spectroscopy, structural and micro-structural measurements have been carried out. The results revealed the role of the Cr, La and Nb ion substitutions in photoluminescence spectra, energy gap, Raman response, morphology grain size and the symmetry presented in these materials near the morphotropic phase boundary (MPB).
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Durruthy-Rodríguez, M.D., Costa-Marrero, J., Hernández-García, M. et al. Photoluminescence in “hard” and “soft” ferroelectric ceramics. Appl. Phys. A 98, 543–550 (2010). https://doi.org/10.1007/s00339-009-5501-y
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DOI: https://doi.org/10.1007/s00339-009-5501-y