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Relaxation processes in barium strontium titanate glass‐ceramics by thermally simulated depolarization current
Author(s) -
Song Xiaozhen,
Zhang Tianyuan,
Zhao Zhangyuan,
Hu Kangjia,
Baturin Ivan,
Shur Vladimir,
Zhang Yong
Publication year - 2019
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/jace.16129
Subject(s) - materials science , relaxation (psychology) , barium titanate , dipole , polarization (electrochemistry) , strontium titanate , strontium barium niobate , ceramic , depolarization , analytical chemistry (journal) , vacancy defect , barium , barium fluoride , condensed matter physics , dielectric , mineralogy , ferroelectricity , chemistry , composite material , optoelectronics , medicine , psychology , social psychology , physics , organic chemistry , chromatography , nuclear physics , metallurgy , endocrinology
Thermally stimulated depolarization current (TSDC) experiments were carried out to investigate the effect of polarization temperature on different relaxation processes in barium strontium titanate glass‐ceramics. It was found that all the TSDC curves are composed of four relaxation peaks. From the characteristics of peak temperature and peak current intensity with various polarization temperatures, the origin of these four peaks are identified as from defect dipole orientation, charge carrier detrapping, in‐crystal oxygen vacancy migration, and trans‐interface oxygen vacancy migration respectively. In addition, both the dipole concentration and trap density for the glass‐ceramic samples were estimated.