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<p>The dielectric behavior of lead-free ferroelectric ceramics has garnered significant attention due to growing environmental concerns. In the present study, it is demonstrated that combining sol–gel-derived ceramic BNKT-ST powders with three distinct sintering techniques enables controlled tuning of dielectric properties within a defined range, where diffused phase transition (DPT) has been identified. The techniques employed include pressureless sintering (PLS), sinter-forging (SF), and spark plasma sintering (SPS), applied to compacted ceramic powders. Structural characterization was carried out using scanning electron microscopy (SEM) and X-ray diffraction (XRD). It can be observed that DPT peak positions depend on the sintering technique.</p> Graphical abstract <p></p>

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Influence of sintering technique on the dielectric behavior for 0.95(0.8Bi0.5Na0.5TiO3–0.2Bi0.5K0.5TiO3)–0.05(SrTiO3) ceramic powder compacts synthesized by sol–gel

  • 期刊论文

  • 发表日期：

    2026年4月24日

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  • Antonino Vega-Siverio,
  • Diana Maria Carrillo Flores,
  • Joel Obed Herrera Robles,
  • Héctor Camacho-Montes,
  • Oscar Raymond Herrera,
  • Sebastián Díaz De La Torre,
  • Guillermo Manuel Herrera Pérez

摘要

The dielectric behavior of lead-free ferroelectric ceramics has garnered significant attention due to growing environmental concerns. In the present study, it is demonstrated that combining sol–gel-derived ceramic BNKT-ST powders with three distinct sintering techniques enables controlled tuning of dielectric properties within a defined range, where diffused phase transition (DPT) has been identified. The techniques employed include pressureless sintering (PLS), sinter-forging (SF), and spark plasma sintering (SPS), applied to compacted ceramic powders. Structural characterization was carried out using scanning electron microscopy (SEM) and X-ray diffraction (XRD). It can be observed that DPT peak positions depend on the sintering technique.

Graphical abstract