EFFECT OF FIRING TEMPERATURES ON THE PHASE STRUCTURE AND ELECTRICAL PROPERTIES OF BNT-BT-0.1NT CERAMICS SYNTHESIZED VIA THE SOLID-STATE COMBUSTION TECHNIQUE

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dc.contributor.authorThatawong, Bhoowadol
dc.contributor.authorTagerd, Kanyanut
dc.contributor.authorVittayakorn, Naratip
dc.contributor.authorUdeye, Thanya
dc.contributor.authorBongkarn, Theerachai
dc.date.accessioned2026-08-06T10:49:33Z
dc.date.available2026-08-06T10:49:33Z
dc.date.issued2025-01-01
dc.description.abstractLead-free ceramic materials of 0.9(0.92Bi0.5Na0.5TiO3-0.08BaTiO3)-0.1NaTaO3 or BNT-BT-0.1NT were obtained using glycine as fuel by a solid-state combustion process. The significance of heat treatment conditions, including calcination at 600-800°C for 2 h and sintering at 1075-1175°C for 2 h, on the structure of the phase, microstructure, electrical and energy-storage properties of BNT-BT-0.1NT ceramics were performed. The perovskite phase was presented for all powder samples. BNT-BT-0.1NT powders calcined at the temperature of 750°C for 2 h showed a 100% pure perovskite phase. The particles morphology exhibited spherical shapes with a wide distribution. As the calcination temperature increased, the average particle size grew from 340 nm to 370 nm. Rietveld refinement confirmed that the BNT-BT-0.1NT ceramics possessed a uniform ABO3 structure with cohabiting of rhombohedral (R), tetragonal (T), and cubic (C) phases. With a rise in sintering temperature, the average grain size expanded from 0.85 μm to 2.66 μm, while the remnant polarization (P<inf>r</inf>) and coercive field (E<inf>c</inf>) decreased. The samples sintered at 1150oC for 2 h, the ceramic highlighted the highest dielectric constant (ε<inf>max</inf> ~ 1827), high density of 5.83 g/cm<sup>3</sup>. Under an applied electric field of 70 kV/cm, the maximum energy storage density reached 0.71 J/cm<sup>3</sup>.
dc.identifier.citationSuranaree Journal of Science and Technology, 32(2), 2025
dc.identifier.doi10.55766/sujst9454
dc.identifier.issn0858849X
dc.identifier.other2-s2.0-105013032634
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/16548
dc.sourceSuranaree Journal of Science and Technology
dc.subjectBNT-BT-0.1NT
dc.subjectCombustion
dc.subjectDielectric
dc.subjectEnergy-Storage
dc.subjectFerroelectric
dc.titleEFFECT OF FIRING TEMPERATURES ON THE PHASE STRUCTURE AND ELECTRICAL PROPERTIES OF BNT-BT-0.1NT CERAMICS SYNTHESIZED VIA THE SOLID-STATE COMBUSTION TECHNIQUE
dc.typeArticle

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