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1986•Inorg. Mater. (Engl. Transl.); (United States)Requires access

p-t-x diagram of Pb(TiZr)O/sub 3/ solid solutions

I.N. Polandov, N.S. Alekhina, O. K. Gulish, G.P. Isaev, B.I. Malyutin

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Abstract

This paper attempts to generalize work the authors performed at high pressures on the phase equilibria in the PbTiO/sub 3/-PbZrO/sub 3/ system for Ti contents up to 50 at.%, i.e., the most interesting compositions from the practical standpoint. It is established that the rhombohedral ferroelectric phase, localized near the Curie point, not only expands its region of temperature stability, but also shifts its region of temperature stability to higher pressures with rise of solid solution Ti content. The authors construct for the first time the complete p-t-x diagram of Pb(Ti, Zr)O/sub 3/ solid solutions with Ti contents up to 50 at.%.

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What this paper is about

This paper attempts to generalize work the authors performed at high pressures on the phase equilibria in the PbTiO/sub 3/-PbZrO/sub 3/ system for Ti contents up to 50 at.%, i.e., the most interesting compositions from the practical standpoint. It is established that the rhombohedral ferroelectric phase, localized near the Curie point, not only expands its region of temperature stability, but also shifts its region of temperature stability to higher pressures with rise of solid solution Ti content. The authors construct for the first time the complete p-t-x diagram of Pb(Ti, Zr)O/sub 3/ solid solutions with Ti contents up to 50 at.%.

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Available abstract

This paper attempts to generalize work the authors performed at high pressures on the phase equilibria in the PbTiO/sub 3/-PbZrO/sub 3/ system for Ti contents up to 50 at.%, i.e., the most interesting compositions from the practical standpoint. It is established that the rhombohedral ferroelectric phase, localized near the Curie point, not only expands its region of temperature stability, but also shifts its region of temperature stability to higher pressures with rise of solid solution Ti content. The authors construct for the first time the complete p-t-x diagram of Pb(Ti, Zr)O/sub 3/ solid solutions with Ti contents up to 50 at.%.

Key concepts: Solid solution, Phase diagram, Curie temperature, Thermodynamics, Trigonal crystal system, Ferroelectricity, Diagram, Materials science

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