EFFECT OF (AlNb)4+ B-SITES SUBSTITUTION ON THE PHASE STRUCTURE, MICROSTRUCTURE AND ELECTRICAL PROPERTIES OF Bi0.47Na0.47Ba0.06TiO3 CERAMICS

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dc.contributor.authorLuangpangai, Anupong
dc.contributor.authorChongsatan, Wistsarut
dc.contributor.authorCharoenthai, Nipaphat
dc.contributor.authorChootin, Suphornphun
dc.contributor.authorVittayakorn, Naratip
dc.contributor.authorBongkarn, Theerachai
dc.date.accessioned2026-08-06T10:50:00Z
dc.date.available2026-08-06T10:50:00Z
dc.date.issued2025-01-01
dc.description.abstractBi0.47Na0.47Ba0.06Ti1-x(Al0.5Nb0.5)xO3 (abbreviated as BNBT1-xANx) lead-free ceramics (x=0-0.05) were synthesized by the solid-state combustion technique. The effect of (AlNb)<sup>4+</sup> content on the phase structure, microstructure and electrical properties was investigated. A pure perovskite structure was obtained from all specimens. Rietveld refinement revealed coexisting rhombohedral and tetragonal phases in all samples and the tetragonal phase increased with increased AlNb content (x). The morphology of the BNBT1-xANx ceramics displayed nearly round grains and anisotropic grain growth. Average grain size decreased from 1.8 to 0.7 µm when x increased from 0 to 0.05 and the grain size distribution became narrower. The density, maximum dielectric constant and remnant polarization rapidly decreased with increased x. The deterioration of the electrical properties induced by (AlNb)<sup>4+</sup> substitution was due to shifting away from the morphotropic phase boundary (MPB), poor microstructure and low density.
dc.identifier.citationSuranaree Journal of Science and Technology, 32(1), 1-10, 2025
dc.identifier.doi10.55766/sujst9286
dc.identifier.issn0858849X
dc.identifier.other2-s2.0-105006549430
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/16665
dc.sourceSuranaree Journal of Science and Technology
dc.subjectBNBT1-xANx
dc.subjectDielectric
dc.subjectFerroelectric
dc.subjectPhase Structure
dc.titleEFFECT OF (AlNb)4+ B-SITES SUBSTITUTION ON THE PHASE STRUCTURE, MICROSTRUCTURE AND ELECTRICAL PROPERTIES OF Bi0.47Na0.47Ba0.06TiO3 CERAMICS
dc.typeArticle

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