Effects of Ca doping on the energy storage properties of (Sr, Ca)TiO3 paraelectric ceramics

The energy storage properties of Ca-doped (Sr, Ca)TiO 3 (SCT) paraelectric ceramics have been intensively investigated by traditional solid state sintering method. Phase structures and morphology were detected by the X-ray diffraction and SEM, respectively. The electric field strength dependence of...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2015-05, Vol.26 (5), p.2726-2732
Main Authors: Zhang, Gui-Fang, Liu, Hanxing, Yao, Zhonghua, Cao, Minghe, Hao, Hua
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Materials Science
Optical and Electronic Materials
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Summary:The energy storage properties of Ca-doped (Sr, Ca)TiO 3 (SCT) paraelectric ceramics have been intensively investigated by traditional solid state sintering method. Phase structures and morphology were detected by the X-ray diffraction and SEM, respectively. The electric field strength dependence of polarization was measured and employed to calculate the energy storage density. The doped SCT ceramics exhibit high permittivity, low loss, and higher breakdown strength. At 333 kV/cm electric field strength, the energy storage density of the 2 mol % Ca-doped SrTiO 3 ceramics with fine grain can achieve 1.95 J/cm 3 , which is 2.8 times of pure SrTiO 3 in the literature, and its energy storage efficiency reaches 72.3 %. Therefore, the SCT ceramics might be a kind of promising energy storage dielectric material.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-015-2749-1