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Updated: Jan 11, 2026

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
High Energy Storage Performance in Bi0.46Sr0.06Na0.5TiO3/CaTiO3 Relaxor Ferroelectric Ceramics
Yangyang Zhang1, Haizhou Guo2, Shuyao Zhai3
1Henan Key Laboratory of Nanocomposites and Applications, Huanghe Science and Technology College, Zhengzhou 450000, China.
None:
(Bi0.5Na0.5)TiO3-based lead-free ferroelectric ceramics are among the most extensively researched energy storage materials today. In this paper, (1 - x)Bi0.46Sr0.06Na0.5TiO3-xCaTiO3 ceramics were synthesized through a solid-phase sintering method by synergistically adjusting CaTiO3 components after introducing Sr2+ at the A-site. The XRD patterns revealed that all samples formed a single perovskite solid solution, with the 111 and 200 peaks shifting to higher levels as the CaTiO3 increased, indicating a gradual decrease in cell volume. The SEM images exhibited dense crystals without any apparent porosity, which were formed by the different components of the ceramics. Through energy storage, dielectric, and charge-discharge performance tests, it was found that with a 10%mol CaTiO3 addition, the samples obtained a maximum breakdown field strength of 260 kV/cm and corresponding saturation polarization strength of 32.80 μC/cm2 and thereby exhibited a reversible energy storage density valued 3.52 J/cm3. In addition, the dielectric constant varied by less than 10% within the temperature range of 63.7 °C to 132.7 °C and presented good frequency (10-250 Hz) stability at 180 kV/cm. Moreover, the ceramics demonstrated a maximum current density reaching 349.58 A/cm2 and a maximum power density of 18.90 MW/cm3 for their charge-discharge performance, all of which makes them suitable for pulse system applications.
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