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Two-Phase State of the Crystal Structure of (1 – x)PbFe2/3W1/3O3 – xPbTiO3 Solid Solutions (x = 0.25, 0.3, and 0.35) at Room Temperature

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Abstract

The evolution of the crystal structure of (1 – x)PbFe2/3W1/3O3 – xPbTiO3 solid solutions depending on the PbTiO3 concentration (at x = 0.25, 0.3, and 0.35) near the morphotropic phase boundary has been investigated using X-ray diffraction at room temperature. It is established that all three compositions are mixtures of the cubic and tetragonal phases and that an increase in the PbTiO3 concentration above 30 mol % increases the tetragonal-phase fraction. The crystal structure parameters and contents of both phases in these solid solutions are determined. It is shown that there exist static displacements of lead ions from the main crystallographic sites at room temperature.

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Funding

E.P. Smirnova acknowledges the partial support of the Russian Foundation for Basic Research, project no. 18-02-00394.

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Correspondence to A. A. Naberezhnov.

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Translated by A. Sin’kov

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Zaitseva, N.V., Naberezhnov, A.A. & Smirnova, E.P. Two-Phase State of the Crystal Structure of (1 – x)PbFe2/3W1/3O3 – xPbTiO3 Solid Solutions (x = 0.25, 0.3, and 0.35) at Room Temperature. Tech. Phys. 66, 67–70 (2021). https://doi.org/10.1134/S1063784221010230

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  • DOI: https://doi.org/10.1134/S1063784221010230

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