Phase transitions, ferroelectric, and piezoelectric properties of lead-free piezoelectric xBaZrO3–(0.25−x)CaTiO3–0.75BaTiO3 ceramics

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dc.contributor.authorChaiyo, Nopsiri
dc.contributor.authorCann, David P.
dc.contributor.authorVittayakorn, Naratip
dc.date.accessioned2026-08-06T10:12:10Z
dc.date.available2026-08-06T10:12:10Z
dc.date.issued2015-09-25
dc.description.abstractLead-free xBaZrO<inf>3</inf>–(0.25−x)CaTiO<inf>3</inf>–0.75BaTiO<inf>3</inf>; x = 0.00–0.25 ceramics were successfully prepared using the conventional solid-state reaction method. Analysis of the sintered ceramics showed that all compositions exhibited a pure phase perovskite. The effects of composition on the phase transition, ferroelectric properties, and piezoelectric properties were studied. With the increasing BaZrO<inf>3</inf> content, the phase transition temperature (T<inf>C</inf>) decreased and the coercive field E<inf>c</inf> decreased. The phase diagram featuring a cubic–rhombohedral–tetragonal triple point (x ~ 0.125) was derived from X-ray diffraction data and dielectric data as a function of temperature. Compositions near the convergence region exhibited the maximum peak in permittivity of ~11,400 at T<inf>C</inf>. In addition, the morphotropic phase boundary compositions showed an enhancement in ferroelectric and piezoelectric properties. The composition 0.125BaZrO<inf>3</inf>–0.125CaTiO<inf>3</inf>–0.75BaTiO<inf>3</inf> exhibited the highest strain values of 0.14 % and a d<inf>33</inf><sup>*</sup> of 474 pm/V.
dc.identifier.citationJournal of Materials Science, 50(18), 6171-6179, 2015
dc.identifier.doi10.1007/s10853-015-9174-y
dc.identifier.issn00222461
dc.identifier.other2-s2.0-84932199368
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/6408
dc.sourceJournal of Materials Science
dc.titlePhase transitions, ferroelectric, and piezoelectric properties of lead-free piezoelectric xBaZrO3–(0.25−x)CaTiO3–0.75BaTiO3 ceramics
dc.typeArticle

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