Structure–property correlations and magnetoelectric response of lead-free BNT–BCTS/CZFMO composite ceramics

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dc.contributor.authorKornphom, Chittakorn
dc.contributor.authorSonchaopri, Nutkamon
dc.contributor.authorYimsabai, Sununta
dc.contributor.authorYotthuan, Surirat
dc.contributor.authorJantaratana, Pongsakorn
dc.contributor.authorPinitsoontorn, Supree
dc.contributor.authorVittayakorn, Naratip
dc.contributor.authorPankaew, Aphiwat
dc.contributor.authorBongkarn, Theerachai
dc.date.accessioned2026-08-06T10:55:33Z
dc.date.available2026-08-06T10:55:33Z
dc.date.issued2026-06-01
dc.description.abstractLead-free multiferroic composite ceramics have garnered increasing attention as an eco-friendly alternative for magnetoelectric (ME) devices. In this work, (100-x) [0.93(Bi<inf>0.5</inf>Na<inf>0.5</inf>TiO<inf>3</inf>) 0.07(Ba<inf>0.945</inf>Ca<inf>0.055</inf>Ti<inf>0.91</inf>Sn<inf>0.09</inf>O<inf>3</inf>)]/xCo<inf>0.6</inf>Zn<inf>0.4</inf>Fe<inf>1.7</inf>Mn<inf>0.3</inf>O<inf>4</inf> composite ceramics, abbreviated as (100-x) BNT-BCTS/xCZFMO were synthesized via a solid-state combustion route. Analysis of XRD data using the Rietveld method confirmed the coexistence of rhombohedral and tetragonal perovskite (BNT–BCTS) phases and a cubic spinel (CZFMO) phase without additional impurity phases. The 0–3 connectivity was verified using SEM/EDS, PFM, and MFM measurements, confirming discrete CZFMO magnetic grains are embedded within a continuous BNT–BCTS piezoelectric matrix. Williamson–Hall (W–H) analysis, treated as a semi-quantitative approach due to fitting limitations in the multiphase composite system, suggested a composition-dependent microstrain trend. The reduced microstrain at intermediate CZFMO contents was consistent with enhanced crystallite growth, improved densification, and the maximum magnetoelectric response. The composition with x = 20 exhibits the highest relative density (~ 98.14%), the highest saturation magnetization (M<inf>s</inf> = 6.55 emu/g), and the maximum magnetoelectric coefficient (α<inf>ME</inf> = 7.92 mV cm<sup>−1</sup> Oe<sup>−1</sup>), showing higher ME coefficients than many previously reported lead-free composites. This work demonstrates the potential of BNT–BCTS/CZFMO composites for multifunctional electronic devices, including magnetic sensors, energy harvesters, and magnetoelectric transducers.
dc.identifier.citationJournal of Materials Science Materials in Electronics, 37(18), 2026
dc.identifier.doi10.1007/s10854-026-17797-6
dc.identifier.issn09574522
dc.identifier.other2-s2.0-105043491218
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/18114
dc.sourceJournal of Materials Science Materials in Electronics
dc.titleStructure–property correlations and magnetoelectric response of lead-free BNT–BCTS/CZFMO composite ceramics
dc.typeArticle

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