Effects of BiMO3 on dielectric, ferroelectric, and piezoelectric properties of perovskite lead-free piezoelectric BaTiO3–(Bi0.5Na0.5)TiO3 ceramics

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dc.contributor.authorChaiyo, Nopsiri
dc.contributor.authorMuanghlua, Rangson
dc.contributor.authorVittayakorn, Wanwilai
dc.contributor.authorVittayakorn, Naratip
dc.date.accessioned2026-08-06T10:16:53Z
dc.date.available2026-08-06T10:16:53Z
dc.date.issued2017-07-01
dc.description.abstractNew lead-free piezoelectric ceramics of 0.9BaTiO<inf>3</inf>–(0.1−x)(Bi<inf>0.5</inf>Na<inf>0.5</inf>)TiO<inf>3</inf>–xBiMO<inf>3</inf>, M=Al and Ga, where x=0.00-0.10, were fabricated by the solid-state reaction technique. The effect of BiMO<inf>3</inf> contents on the perovskite structure, phase transition, and dielectric, ferroelectric, and piezoelectric properties was investigated. X-ray diffraction patterns showed that the ceramics exhibit a monophasic perovskite phase up to x=0.06, suggesting stabilized perovskite structures with B-site aliovalent substitutions. Compositional-dependent phase transitions were observed from tetragonal to pseudo-cubic phase with increasing BiMO<inf>3</inf> amounts. Al<sup>3+</sup> ions were found to stabilize the transition temperature of the ceramics, while significantly decreasing transition temperature, and a change in the dielectric peak were found with an increasing amount of Ga<sup>3+</sup>. Regarding Al<sup>3+</sup> substitution, the remanent polarization (P<inf>r</inf>) values were found to decrease slightly with the Al<sup>3+</sup> amount. With regard to Ga<sup>3+</sup> substitution, P<inf>r</inf> values decreased with the Ga<sup>3+</sup> amount up to 0.06 and then increased slightly. The ceramics became softer with a higher degree of substitution according to the lower coercive field (E<inf>c</inf>), when compared with 0.9BaTiO<inf>3</inf>–0.1(Bi<inf>0.5</inf>Na<inf>0.5</inf>)TiO<inf>3</inf> ceramics. Ceramics with a lower degree of substitution and tetragonal phase showed butterfly strain loops that correlated with normal ferroelectric behavior.
dc.identifier.citationInternational Journal of Applied Ceramic Technology, 14(4), 583-592, 2017
dc.identifier.doi10.1111/ijac.12688
dc.identifier.issn1546542X
dc.identifier.other2-s2.0-85018801560
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/7708
dc.sourceInternational Journal of Applied Ceramic Technology
dc.subjectbarium titanate
dc.subjectbismuth sodium titanate
dc.subjectlead-free
dc.subjectpiezoelectric ceramic
dc.titleEffects of BiMO3 on dielectric, ferroelectric, and piezoelectric properties of perovskite lead-free piezoelectric BaTiO3–(Bi0.5Na0.5)TiO3 ceramics
dc.typeArticle

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