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Dielectric Behavior in the Systems PbHfO 3 —BaHfO 3 and PbHfO 3 —SrHfO 3
Author(s) -
WlLCOX DAVID L.,
COOK RALPH L.
Publication year - 1963
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.1151-2916.1963.tb11742.x
Subject(s) - zirconate , antiferroelectricity , ferroelectricity , dielectric , trigonal crystal system , phase (matter) , polarizability , materials science , mineralogy , permittivity , tetragonal crystal system , analytical chemistry (journal) , crystallography , chemistry , crystal structure , titanate , ceramic , optoelectronics , composite material , organic chemistry , chromatography , molecule
An intermediate antiferroelectric phase was observed in both the systems (Pb,Ba)HfO 3 and (Pb,Sr)HfO 3 whereas the intermediate antiferroelectric phase has been reported to be observed only in the system (Pb,Sr)ZrO 3 of the analogous zirconate systems. A ferroelectric phase was observed in the system (Pb,Ba)HfO 3 . This ferroelectric phase was determined to be rhombohedral with the angle between the rhombohedral axes slightly less than 90°. The differences which were observed between the hafnate systems investigated and the analogous zirconate systems are attributed to the lower electronic polarizability of the hafnium ion.