Premium
Solubility Limit of La in the Lead Zirconate‐Titanate System
Author(s) -
SCHULZE W. A.,
MILLER T. G.,
BIGGERS J. V.
Publication year - 1975
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1975.tb18973.x
Subject(s) - solubility , lead titanate , lead zirconate titanate , materials science , ceramic , analytical chemistry (journal) , phase (matter) , mineralogy , titanate , chemistry , ferroelectricity , metallurgy , chromatography , dielectric , optoelectronics , organic chemistry
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 pbZrO 3 . 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 La 2 Zr 2 O 7 and/or La 2 Ti 2 O 7 . 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 PbZrO 3 (1300°C firing).