PREPARATION OF Lu2.5Y0.5(Al5-xGax)O12:Ce TRANSLUCENT CERAMIC FOR X-RAY DETECTION APPLICATIONS USING SPARK PLASMA SINTERING (SPS)

Preparation of Lu2.5Y0.5(Al5-xGax)O12:Ce Translucent Ceramic for X-ray Detection Applications using SPS

Authors

  • Prapon Lertloypanyachai Faculty of Science and Technology, Muban Chombueng Rajabhat University, Ratchaburi 70150, Thailand.
  • Prom Kantuptim Department of Materials Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.
  • Toshiaki Kunikata Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Ikoma, Nara, 630-0192, Japan.
  • Anuwat Hassadee Program of Physics, Faculty of Education, Bansomdejchaopraya Rajabhat University, Bangkok 10600, Thailand.
  • Weerapong Chewpraditkul Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand.
  • Takumi Kato Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Ikoma, Nara, 630-0192, Japan.
  • Daisuke Nakauchi Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Ikoma, Nara, 630-0192, Japan.
  • Noriaki Kawaguchi Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Ikoma, Nara, 630-0192, Japan.
  • Takayuki Yanagida Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Ikoma, Nara, 630-0192, Japan.

DOI:

https://doi.org/10.55766/sujst9837

Keywords:

Luminescence, Translucent ceramic, X-ray detection

Abstract

In this research, translucent ceramics of Lu2.5Y0.5(Al5-xGax)O12 doped with Ce 1 mol% were fabricated using a spark plasma sintering (SPS) furnace. The microstructure of translucent ceramic was revealed by a scanning electron microscopy (SEM) technique which indicated grain boundaries as polycrystalline characteristics. The absorption spectra showed the absorption lines of Ce³⁺, with an absorption edge around 480 nm, corresponding to the 4f-5d transitions of the Ce³⁺ ions. The photoluminescence (PL) emission band was presented at approximately 507-535 nm, attributed to the Ce3+: 5d1-4f transition. In addition, PL emission results also showed a slight blue shift with increasing Ga substitutional content in the garnet structure. The radioluminescence (RL) spectra displayed a broad emission band between 450 and 690 nm under X-ray excitation. The PL decay time constants for all samples were on the order of tens of nanoseconds. The increasing Ga content in these ceramic scintillators leads to improvement of luminescence efficiency, luminescence decay time reduction, which is crucial for the development of novel scintillators for X-ray detection applications.

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Published

2025-07-17

How to Cite

Lertloypanyachai, P., Kantuptim, P., Kunikata, T., Hassadee, A., Chewpraditkul, W., Kato, T., Nakauchi, D., Kawaguchi, N., & Yanagida, T. (2025). PREPARATION OF Lu2.5Y0.5(Al5-xGax)O12:Ce TRANSLUCENT CERAMIC FOR X-RAY DETECTION APPLICATIONS USING SPARK PLASMA SINTERING (SPS): Preparation of Lu2.5Y0.5(Al5-xGax)O12:Ce Translucent Ceramic for X-ray Detection Applications using SPS. Suranaree Journal of Science and Technology, 32(2), 030316(1–7). https://doi.org/10.55766/sujst9837

Issue

Vol. 32 No. 2 (2025): March - April

Section

Research Article

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