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Pyroelectric Properties of Diphasic Polar Glass‐Ceramics at Low Temperatures
Author(s) -
Xie Weimin,
Ding Zhenya,
Zhang Peilin
Publication year - 1996
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.1151-2916.1996.tb08117.x
Subject(s) - pyroelectricity , ceramic , materials science , crystallite , polar , atmospheric temperature range , composite material , glass transition , temperature coefficient , analytical chemistry (journal) , mineralogy , ferroelectricity , thermodynamics , chemistry , dielectric , metallurgy , optoelectronics , polymer , physics , chromatography , astronomy
The pyroelectric properties of the diphasic polar glassceramic (Sr 2 TiSi 2 O 8 and SrTiO 3 ) are investigated in the temperature range from 10 to 300 K. The pyroelectric coefficient of the diphasic polar glass‐ceramic is −1.8 × 10 −7 C/ (m 2. K) at room temperature. It is interesting that the absolute value of p 3 decreases quickly below 100 K and eventually becomes positive below 40 K, corresponding to the structural phase transition of the crystalline SrTiO 3 in the glass‐ceramic. XRD, DTA, and SEM were used to investigate the coupling patterns of Sr 2 TiSi 2 O 8 and SrTiO 3 crystallites in the glass‐ceramic and to explain the special coupling effects