1. Solubility Limit of La in the Lead Zirconate-Titanate System
- Author
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T. G. Miller, Walter A. Schulze, and J. V. Biggers
- Subjects
Materials science ,Inorganic chemistry ,Analytical chemistry ,Sintering ,Lead zirconate titanate ,chemistry.chemical_compound ,chemistry ,visual_art ,X-ray crystallography ,Materials Chemistry ,Ceramics and Composites ,visual_art.visual_art_medium ,Curie temperature ,Limit (mathematics) ,Ceramic ,Solubility - Abstract
The disappearing-phase method was used to determine the extent of the solid-solution region of the PLZT system for conventionally sintered ceramics prepared at 1100° and 1300°C in a PbO atmosphere provided by pbZrO3. A decrease in the firing temperature from 1300° to 1100°C lowers the solubility limit by 5 to 8 at.% La. Beyond the limits of solubility, additional La forms La2Zr2O7 and/or La2Ti2O7. The limit determined by the disappearing-phase method (1300°C firing) is compared to values determined by the parametric method. The Curie temperature is stabilized at 5 at.% La for modified PbZrO3 (1300°C firing).
- Published
- 1975
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