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Enhanced high-temperature piezoelectric response in BiFeO3–BaTiO3 piezoelectric ceramics with multiphase coexistence structure and composite domain morphology
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DOI：10.1016/j.jallcom.2026.190330.png)
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Abstract
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• A high d33 of 597 pC/N achieved at the high real-time Tdr of 356.4 °C. • The BFTM–12NT ceramic piezoelectric thermal stability is significantly improved with Δd33 is less than 2.21% between 100 °C–150 °C. • d33 can still reach 124 pC/N at Tdr = 400 °C. • Lead-free BFTM–12NT ceramic with multiphase coexistence structure, composite microdomains, nanodomains, and polar nanoregions morphology (PNRs) are the main factors enhancing the piezoelectric response.
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