Sintering Temperature Effect on Phase Formation, Microstructure and Electrical Properties of Modified KNLNTS Solid Solution Prepared via the Solid-State Combustion Technique

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dc.contributor.authorKornphom, Chittakorn
dc.contributor.authorThawong, Pichittra
dc.contributor.authorKhiwoon, Suprakorn
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.abstractIn this study, the effect of sintering temperature (1000–1100 °C for 2 h) on phase formation, phase transition, microstructure and electrical properties of lead-free piezoelectric (K<inf>0.44</inf>Na<inf>0.52</inf>Li<inf>0.04</inf>)(Nb<inf>0.84</inf>Ta<inf>0.10</inf>Sb<inf>0.06</inf>)O<inf>3</inf> (KNLNTS) solid solution with 0.3 wt%Bi<inf>2</inf>O<inf>3</inf> + 0.4 wt%Fe<inf>2</inf>O<inf>3</inf> + 0.2 wt%CuO additive (abbreviate as modified KNLNTS) was investigated. Modified KNLNTS ceramics were synthesized by the solid-state combustion technique using glycine as fuel. The modified KNLNTS powders were prepared using the calcination condition of 650 °C for 2 h. The XRD pattern of all sintered ceramics exhibited a pure perovskite phase. Using Rietveld refinement to analyze the phase formation showed that the modified KNLNTS ceramics had co-existing phases of orthorhombic and tetragonal in all sintered ceramics and the orthorhombic phase increased when the sintering temperature increased. The average grain size, T<inf>O-T</inf>, T<inf>c</inf>, P<inf>r</inf> and Ec increased with increasing sintering temperature. At the sintering temperature of 1025 °C, the modified KNLNTS ceramic showed the best electrical properties (C<inf>ε</inf> ≈ 6745, S<inf>max</inf> ≈0.274% and d*<inf>33</inf> ≈ 548 pm/V). The good electrical properties of the modified KNLNTS ceramics makes them good candidates for lead-free applications to replace Pb-based ceramics.
dc.identifier.citationIntegrated Ferroelectrics, 239(1), 210-223, 2023
dc.identifier.doi10.1080/10584587.2023.2234623
dc.identifier.issn10584587
dc.identifier.other2-s2.0-85174862383
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/13831
dc.sourceIntegrated Ferroelectrics
dc.subjectcombustion technique
dc.subjectdielectric properties
dc.subjectmicrostructure
dc.subjectModified KNLNTS
dc.subjectRietveld refinement
dc.titleSintering Temperature Effect on Phase Formation, Microstructure and Electrical Properties of Modified KNLNTS Solid Solution Prepared via the Solid-State Combustion Technique
dc.typeArticle

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