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<p>K(Ta<sub>0.5</sub>Nb<sub>0.5</sub>)O<sub>3</sub> electro-optic transparent ceramics were fabricated using solid-state synthesis and a conventional sintering technique. The effects of the sintering temperature <i>T</i><sub>s</sub> and the excess KHCO<sub>3</sub> content <i>y</i> on densification, crystal structure, microstructure and electric properties were investigated. Dense ceramics with a relative density of 97–98% were obtained at <i>T</i><sub>s</sub> = 1150–1170 °C and <i>y</i> = 1 and 3&#xa0;mol%. At an infrared wavelength λ of 1310&#xa0;nm, the ceramics with a thickness of about 0.2&#xa0;mm exhibited a higher optical transmittance of 35–49% at <i>y</i> = 1&#xa0;mol% than that of 1–13% at <i>y</i> = 3&#xa0;mol%. For the ceramics with <i>y</i> = 1&#xa0;mol%, the linear EO effect <i>r</i> of 252 and 268&#xa0;pm/V was measured at <i>T</i><sub>s</sub> = 1160 and 1170&#xa0;°C, respectively. The further increase in the EO effect can be anticipated through the microstructural modification of the ceramics.</p> Graphical abstract <p></p>

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Fabrication of K(Ta0.5Nb0.5)O3 electro-optic transparent ceramics by conventional sintering technique

  • 期刊论文

  • 发表日期：

    2026年7月20日

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  • Ichiro Fujii,
  • Ryosuke Makita,
  • Shintaro Ueno,
  • Satoshi Wada

摘要

K(Ta0.5Nb0.5)O3 electro-optic transparent ceramics were fabricated using solid-state synthesis and a conventional sintering technique. The effects of the sintering temperature Ts and the excess KHCO3 content y on densification, crystal structure, microstructure and electric properties were investigated. Dense ceramics with a relative density of 97–98% were obtained at Ts = 1150–1170 °C and y = 1 and 3 mol%. At an infrared wavelength λ of 1310 nm, the ceramics with a thickness of about 0.2 mm exhibited a higher optical transmittance of 35–49% at y = 1 mol% than that of 1–13% at y = 3 mol%. For the ceramics with y = 1 mol%, the linear EO effect r of 252 and 268 pm/V was measured at Ts = 1160 and 1170 °C, respectively. The further increase in the EO effect can be anticipated through the microstructural modification of the ceramics.

Graphical abstract