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Aging of Dielectric Dispersion in PLZT Relaxor Ceramics
Author(s) -
SCHULZE W. A.,
BIGGERS J. V.,
CROSS L. E.
Publication year - 1978
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.1151-2916.1978.tb09227.x
Subject(s) - materials science , permittivity , antiferroelectricity , dielectric , dispersion (optics) , ceramic , dielectric permittivity , relaxation (psychology) , ferroelectricity , dielectric dispersion , ferroelectric ceramics , relative permittivity , electroceramics , composite material , condensed matter physics , mineralogy , optics , optoelectronics , chemistry , fabrication , medicine , psychology , social psychology , microfabrication , physics , alternative medicine , pathology
The effect of aging on the temperature dependence of permittivity ( K ) and tan δ as a function of frequency was examined for both ferroelectric and antiferroelectric PLZT compositions. All compositions aged near their transition temperatures exhibited a marked decrease in dispersion between the aging temperature and the temperature of the high frequency (100 kHz) permittivity peak. These results are discussed in terms of the Smolenskii model for dielectric relaxation.