Growth of Tb-doped BaCl2/NaCl/KCl ternary eutectic and its luminescence properties

Yui Takizawa, Kei Kamada, Kyoung Jin Kim, Masao Yoshino, Akihiro Yamaji, Shunsuke Kurosawa, Yuui Yokota, Hiroki Sato, Satoshi Toyoda, Yuji Ohashi, Takashi Hanada, Vladimir V. Kochurikhin, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, Tb:BaCl2 and NaCl/KCl ternary eutectics were grown using quartz ampoules via the vertical Bridgman–Stockbarger method. Each crystal phase had a polygonal columnar shape with a length of 300 µm along the growth direction. The Tb:BaCl2 scintillator phase grew in the columnar phase. The BaCl2 scintillator phase is expected to make optical waveguides of the scintillation light. The expected Tb3+ emission peak was observed at approximately 360–630 nm under X-ray irradiation. This emission is mainly attributed to the Tb3+5D47F6, 7F6, 7F5, 7F4, and 7F3 transitions and BaCl2 host emission transition. The photoluminescence decay times of the Tb:BaCl2/NaCl/KCl eutectics was 0.49 ms (7.5%) and 6.64 ms (92.5%).

Original languageEnglish
Article number126467
JournalJournal of Crystal Growth
Volume580
DOIs
Publication statusPublished - 2022 Feb 15

Keywords

  • A1.Eutectics
  • A2.Bridgman technique
  • B1.Halides
  • B2.Scintillator materials
  • B3.Scintillators

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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