Enhancing the dielectric, electrocaloric and energy storage properties of lead-free Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramics prepared via sol-gel process
نویسندگان
چکیده
The Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) ceramics were successfully prepared by the sol-gel process and sintered at 1420 °C. effect of sintering times (2, 4 6 h) on structural, microstructural, electric properties, energy storage, electrocaloric was systematically examined. X-ray diffraction (XRD) results show that all samples crystallize in pure perovskite structure. morphotropic phase transition from tetragonal to orthorhombic (T-O) identified confirmed Rietveld refinement. BCZT ceramic °C for h possesses a good relative density 98% exhibits optimal properties with high dielectric permittivity (?r,max) ~16310, large coefficient (?) ~ 0.244Kmm/kV storage efficiency 63.65%.
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ژورنال
عنوان ژورنال: Physica B-condensed Matter
سال: 2021
ISSN: ['1873-2135', '0921-4526']
DOI: https://doi.org/10.1016/j.physb.2020.412760