Phase equilibrium and properties of solid solutions of PbTiO3-PbZrO3-PbNb2/3Mg1/3O3-PbGeO3 system

Phase equilibrium and properties of solid solutions of PbTiO3-PbZrO3-PbNb2/3Mg1/3O3-PbGeO3 system

Phase diagrams of three sections of the four-component system PbTiO 3 -PbZrO 3 -PbNb 2/3 Mg 1/3 O 3 -PbGeO 3 are plotted (at 20°C) and electrophysical properties of solid solutions are studied. It is found that morphotropic areas, in which dielectric, piezoelectric, and elastic properties are extrem...

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Veröffentlicht in:Inorganic materials 2009-02, Vol.45 (2), p.173-181
Hauptverfasser: Reznitchenko, L. A., Shilkina, L. A., Razumovskaya, O. N., Yarovtseva, E. A., Dudkina, S. I., Verbenko, I. A., Demchenko, O. A., Yurasov, Yu. I., Andryushina, I. N., Esis, A. A.
Format: Artikel
Sprache:eng
Schlagworte:
Binary systems
Chemistry
Chemistry and Materials Science
Defects
Dielectric properties
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Inorganic materials
Intervals
Materials Science
Phase diagrams
Piezoelectricity
Solid solutions
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Zusammenfassung:Phase diagrams of three sections of the four-component system PbTiO 3 -PbZrO 3 -PbNb 2/3 Mg 1/3 O 3 -PbGeO 3 are plotted (at 20°C) and electrophysical properties of solid solutions are studied. It is found that morphotropic areas, in which dielectric, piezoelectric, and elastic properties are extreme, have a wider concentration interval than in binary systems serving as the base for the studied solid solutions. In monophase areas, isosymmetrical fields (phase states) divided by areas of constant structural parameters are revealed. An explanation of the observed effects based on the real defect structure of objects is proposed.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168509020125