Structural, optical and electrical properties of the microcrystalline structure of (Ba1-xY2x/3)(Zr0.20Ti0.80)O3 ceramics

Simple item page
dc.contributor.authorSumang, Rattiphorn
dc.contributor.authorThongmee, Navavan
dc.contributor.authorBongkarn, Theerachai
dc.contributor.authorPrasertpalichat, Sasipohn
dc.contributor.authorKidkhunthod, Pinit
dc.contributor.authorYimnirun, Rattikorn
dc.contributor.authorVittayakorn, Naratip
dc.date.accessioned2026-08-06T10:29:10Z
dc.date.available2026-08-06T10:29:10Z
dc.date.issued2020-07-01
dc.description.abstractYttrium (Y<sup>3+</sup>) doped barium zirconate titanate, (Ba<inf>1-x</inf>Y<inf>2x/3</inf>)(Zr<inf>0.20</inf>Ti<inf>0.80</inf>)O<inf>3</inf>; BYZT ceramics with varying x (0 = x ≤ 0.10) were prepared by the solid-state reaction method. These samples were analyzed by X-ray diffraction (XRD) and the XRD patterns were fitted using the Rietveld refinement. The local structural changes of the BYZT ceramics were investigated by synchrotron X-ray absorption spectroscopy. The results showed that an increase in the x content in the BYZT lattice structure significantly affected the phase transition behavior and the local structure around the Ti absorbing atoms, which corresponds with the phase transition from a tetragonal to a cubic structure. SEM images showed a uniform and highly dense microstructure with increasing x values. The optical band gap (E<inf>gap</inf>) values measured from the UV–visual diffuse reflectance spectra, showed a decrease from ~3.55 eV to ~2.90 eV with increasing values of x. The modified Curie-Weiss law showed that a normal ferroelectric phase transition is observed in the unmodified BZT ceramic and as the concentration of x increased, it induces diffuseness in the phase transition behavior. The largest dielectric constant (ε<inf>r</inf> = 13,200), the highest recoverable energy-storage density (W<inf>rec</inf> = 1.76 J/cm<sup>3</sup>) with an excellent energy storage efficiency (η = 91%) under a lower electric field of 50 kV/cm and lowest dielectric loss (tanδ = 0.01) were found in the composition of Ba<inf>0.98</inf>Y<inf>0.01337</inf>Zr<inf>0.2</inf>Ti<inf>0.8</inf>O<inf>3</inf> (x = 0.02 mol.%).
dc.identifier.citationRadiation Physics and Chemistry, 172, 2020
dc.identifier.doi10.1016/j.radphyschem.2020.108834
dc.identifier.issn0969806X
dc.identifier.other2-s2.0-85081919089
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/11107
dc.sourceRadiation Physics and Chemistry
dc.subjectBarium zircronate titanate
dc.subjectDielectric properties
dc.subjectEnergy-storage density
dc.subjectOptical properties
dc.subjectStructure refinement
dc.titleStructural, optical and electrical properties of the microcrystalline structure of (Ba1-xY2x/3)(Zr0.20Ti0.80)O3 ceramics
dc.typeArticle

Files

Collections

Research