Morphotropic ceramic solid solutions of the Pb(B³⁺_½Nb_½)O₃ - PbTiO₃ binary system

Andris Sternberg Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str., LV, 1063, Riga, Latvia

Leonids Shebanovs Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str., LV, 1063, Riga, Latvia

John Y. Yamashita Toshiba Corporation, Kawasaki, Japan

Maija Antonova Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str., LV, 1063, Riga, Latvia

Maris Livinsh Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str., LV, 1063, Riga, Latvia

Abstract

The structure, dielectric, ferroelectric and electromechanical properties of lead lutecium niobate-titanate (PLuNT) and lead erbium niobate-titanate (PErNT) binary systems are reported. The data of phase diagram, crystallographic symmetry and morphotropic phase boundaries (MPB) are provided. High values of the electromechanical coupling coefficients k_p = 0.66, k_t = 0.48, k₃₁ = 0.36 of (1−x)PLuN − xPT ceramics are attained in compositions near the MPB at x≈0.41.

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Morphotropic ceramic solid solutions of the Pb(B³⁺_½Nb_½)O₃ - PbTiO₃ binary system

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Morphotropic ceramic solid solutions of the Pb(B³⁺_½Nb_½)O₃ - PbTiO₃ binary system