Valence state of dopant and scintillation properties of Ce-doped Sr 3Y(BO3)3 crystal

Rayko Simura, Shohei Kawai, Kazumasa Sugiyama, Takayuki Yanagida, Takamasa Sugawara, Toetsu Shishido, Akira Yoshikawa

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A transparent Ce:SYB crystal was grown by employing the floating zone method in a dry-air atmosphere, and the growth rate was 1 mm/h. The feed/seed rods were formed by sintering raw powder at 1000 °C for 24 h. The Ce content in the grown crystal was measured by electron probe microanalysis and was found to be very low (approximately 0.1 at%). Ce LIII XANES measurement showed that 90% of the Ce in the sintered powder was quadrivalent. On the other hand, approximately 80% of the Ce in the grown crystal was trivalent. Emission bands centered at 415 nm corresponding to the 5d-4f transition of Ce3+ were observed when the excitation wavelength was 365 nm. The decay time under this condition was approximately 12.26±0.45 ns. The light yield strength excited by an α-source was approximately ∼6% of that from the Li-glass.

Original languageEnglish
Pages (from-to)296-299
Number of pages4
JournalJournal of Crystal Growth
Volume362
Issue number1
DOIs
Publication statusPublished - 2013 Jan 1

Keywords

  • A1. Ce 5d-4f luminescence
  • B1. Ce LIII XANES
  • B1. Double borates
  • B1. Sr Y(BO)

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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