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Thermal annealing effects on the energy storage properties of BST ceramics
Author(s) -
Song Zhe,
Liu Hanxing,
Lanagan Michael T,
Zhang Shujun,
Hao Hua,
Cao Minghe,
Yao Zhonghua,
Fu Zhenxiao,
Huang Kun
Publication year - 2017
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.14903
Subject(s) - annealing (glass) , materials science , dielectric , activation energy , ceramic , oxygen , electrical resistivity and conductivity , dielectric loss , energy storage , atmospheric temperature range , composite material , thermal , dielectric strength , analytical chemistry (journal) , mineralogy , chemistry , thermodynamics , optoelectronics , electrical engineering , power (physics) , physics , engineering , organic chemistry , chromatography
Thermal annealing treatments with different atmospheres (air, oxygen, and reducing atmospheres, respectively) were employed for the conventionally sintered (Ba 0.4 Sr 0.6 )TiO 3 (BST) ceramics. The effect of thermal annealing on the energy storage properties of BST ceramics was investigated, where oxygen vacancies played an important role. The dielectric loss, bulk resistivity and dielectric breakdown strength (BDS) were found to be sensitive to the annealing process, leading to the different energy densities in the range of 0.30‐0.80 J/cm 3 . Temperature‐dependent dielectric measurement and thermally stimulated depolarization current analysis were conducted to understand the impacts of oxygen vacancies on the macroscopic properties, which were found to be closely associated with the annealing conditions.