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Vol. 32, No. 8(2), S&M2292

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Sensors and Materials, Volume 38, Number 2(1) (2026)
Copyright(C) MYU K.K.
pp. 753-759
S&M4345 Research paper
https://doi.org/10.18494/SAM6003
Published: February 6, 2026

Power Generation Characteristics of Cr-doped Al2O3 Transparent Ceramics for Nuclear Battery Application [PDF]

Takayuki Yanagida, Keita Miyajima, Kai Okazaki, Yuta Tominaga, Akihiro Nishikawa, Kensei Ichiba, Takumi Kato, Daisuke Nakauchi, and Noriaki Kawaguchi

(Received October 24, 2025; Accepted December 12, 2025)

Keywords: scintillator, nuclear battery, luminescence, transparent ceramics, Al2O3

Cr 0.05–1.0%-doped Al2O3 ceramics were synthesized by spark plasma and vacuum sintering to compare their power generation properties under α-, β- and X-ray irradiations for nuclear battery application. Moreover, Cr 0.6%-doped Al2O3 ceramics with different thicknesses fabricated by vacuum sintering were prepared to investigate the effects of sample size on power generation properties. The same as other phosphors, they showed the optimum Cr concentration in this specific application. The power generation decreased with increasing sample thickness under α- and β-ray irradiations, whereas the optimum sample size existed under X-ray irradiation.

Corresponding author: Takayuki Yanagida


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Cite this article
Takayuki Yanagida, Keita Miyajima, Kai Okazaki, Yuta Tominaga, Akihiro Nishikawa, Kensei Ichiba, Takumi Kato, Daisuke Nakauchi, and Noriaki Kawaguchi, Power Generation Characteristics of Cr-doped Al2O3 Transparent Ceramics for Nuclear Battery Application, Sens. Mater., Vol. 38, No. 2, 2026, p. 753-759.



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