Phase Structure, Microstructure, and Electrical Properties of Bi0.47Na0.47Ba0.06TiO3 Ceramics with (LiNb)4+ Substituted into B-Sites

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dc.contributor.authorLuangpangai, Anupong
dc.contributor.authorThatawong, Bhoowadol
dc.contributor.authorCharoenthai, Nipaphat
dc.contributor.authorVittayakorn, Naratip
dc.contributor.authorBongkarn, Theerachai
dc.date.accessioned2026-08-06T10:39:17Z
dc.date.available2026-08-06T10:39:17Z
dc.date.issued2023-01-01
dc.description.abstractDue to the substitution of complex ions into B-sites is very interesting in recent, lead-free Bi<inf>0.47</inf>Na<inf>0.47</inf>Ba<inf>0.06</inf>Ti<inf>1−</inf><inf>x</inf> (LiNb) <inf>x</inf> O<inf>3</inf> (BNBT<inf>1−</inf><inf>x</inf> LN <inf>x</inf>) ceramics (with x = 0–0.04) were fabricated by the solid-state combustion method. The influence of (LiNb)<sup>4+</sup> (x) on the phase structure, microstructure, and electrical properties was investigated. The X-ray diffraction (XRD) patterns exhibited a pure perovskite structure for all specimens. Coexisting rhombohedral and tetragonal phases were observed in all samples and the tetragonal phase increased with increased x, as analyzed by the Rietveld refinement method. The morphology of the BNBT<inf>1−</inf><inf>x</inf> LN <inf>x</inf> ceramics, obtained by scanning electron microscopy (SEM), revealed almost-round grain shapes and anisotropic grain growth. The density and average grain sizes decreased from 5.84 to 5.54 g/cm<sup>3</sup> and 1.7 to 0.9 µm, respectively, when x increased from 0 to 0.04. The grain size distribution decreased with increased (LiNb)<sup>4+</sup> content. A reduction in the dielectric properties was observed, due to the phase ratio changing away from a morphotropic phase boundary (MPB), an inferior microstructure, and low density caused by (LiNb)<sup>4+</sup> substitution. The (LiNb)<sup>4+</sup> substitution induced the transition from non-ergodic relaxor to ergodic relaxor ferroelectric state.
dc.identifier.citationIntegrated Ferroelectrics, 239(1), 197-209, 2023
dc.identifier.doi10.1080/10584587.2023.2234622
dc.identifier.issn10584587
dc.identifier.other2-s2.0-85174864312
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/13824
dc.sourceIntegrated Ferroelectrics
dc.subjectBNBT1− xLNx
dc.subjectdielectric
dc.subjectferroelectric
dc.subjectmicrostructure
dc.subjectphase formation
dc.titlePhase Structure, Microstructure, and Electrical Properties of Bi0.47Na0.47Ba0.06TiO3 Ceramics with (LiNb)4+ Substituted into B-Sites
dc.typeArticle

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