The Ba0.985La0.015Ti0.9Sn0.1O3 ceramic has been prepared by a cost-effective solid-state reaction method. Preliminary room-temperature X-ray diffraction indicates that the crystallization of the ceramic is good. Field Emission Scanning Electron Microscopy was used to study the microstructure of ceramic. X-ray photoelectron spectroscopy was used to characterize the oxygen vacancies. Dielectric properties and impedance spectroscopy reflected the characteristic of relaxor-type behavior. Modified Curie–Weiss law was used to evaluate the relaxor behavior. The fitting result of the relaxation parameter λ = 1.4, which verifies their relaxor property. Jonscher’s power law was used to analyze the behavior of alternating current conductivity. The Arrhenius law was used to calculate the relaxor activation-energy (Ea) and the conduction activation-energy (Ec). The fitting results show that the Ea and Ec are 1.1 and 1. 13 eV, respectively. These values demonstrate that the high-temperature relaxor behavior was attributed to the double ionized oxygen vacancies. The electric field versus polarization curve reflects the energy-storage property of it. The maximum recoverable energy-storage density is 2.14 J/cm3, and the energy-storage efficiency is 67.65%.

The defect related energy-storage properties of A-site off-stoichiometry ferroelectric ceramic

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi2Nb2O9 lead Free Ceramics

Materials with high dielectric permittivity are in demand due to their potential applications in microelectronics, capacitors and related fields. Polymer/ceramic composites, due to their improved p...

Dielectric and Thermal Behavior of Polystyrene/Sr2TiMnO6 (STMO) Composites

Ferroelectric ceramic compositions SrBi2–xYxNb2O9 (x = 0.0, 0.2, 0.4, 0.6 and 0.8) were prepared via conventional solid-state route with high density (92-99%) establishing the sintering conditions....

Structural, Ferroelectric, Dielectric and Piezoelectric Studies of Yttrium Substituted SrBi2Nb2O9 Lead-free Relaxor Ceramics

A promising Aurivillius layered pervoskite ceramics, namely, the title compound has drawn interest in recent days owing to its figure of merit (magnetoelectric coupled properties). General formula ...

Electrical Studies on Bi4NdTi3Fe0.7Co0.3O15-Bi3NdTi2Fe0.7Co0.3O12–δ Intergrowth Aurivillius Ceramics

Strontium bismuth niobate (SrBi2Nb2O9 (SBN), K0.025Sr0.95Gd0.025Bi2Nb2O9 (KSGBN1), K0.05Sr0.9Gd0.05Bi2Nb2O9 (KSGBN2) and K0.1Sr0.8Gd0.1Bi2Nb2O9 (KSGBN3)) ceramics were prepared by two stage solid s...

Bacchupalli Ravi Kumar

Papers

Synthesis, Impedance and Dielectric Studies of Double Doped Strontium Bismuth Niobate Ferroelectric Ceramics