Abstract
Effects of a constant electric field (0 < E < 5 kV/cm) on the optical transmission of 91PbZn1/3Nb2/3O3-9PbTiO3 (PZN-9PT) and 65PbMg1/3Nb2/3O3-35PbTiO3 (PMN-35PT) single crystals belonging to the morphotropic regions of these solid solution systems have been studied. At temperatures close that of the morphotropic phase transition, the applied electric field induces two new intermediate monoclinic phases (Ma and Mc) in PZN-9PT and a single intermediate monoclinic phase in PMN-35PT crystals. In PMN-35PT, the new phase is inhomogeneous; in PZN-9PT, the transition from Ma to Mc has a continuous character. The E-T phase diagrams for both crystals are constructed. The results are interpreted within the framework of the Devonshire theory of strongly anharmonic crystals.
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Original Russian Text © L.S. Kamzina, I.P. Raevskiĭ, E.V. Snetkova, 2006, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2006, Vol. 32, No. 20, pp. 85–94.
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Kamzina, L.S., Raevskiĭ, I.P. & Snetkova, E.V. Electric-field-induced phase transitions in <001>-oriented PZN-9PT and PMN-35PT single crystals. Tech. Phys. Lett. 32, 908–911 (2006). https://doi.org/10.1134/S1063785006100270
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DOI: https://doi.org/10.1134/S1063785006100270