Crystal growth and scintillation properties of Ce and Sr co-doped (Gd,Y)F3 single crystals

Kei Kamada, Takayuki Yanagida, Kenji Aoki, Natalia Solovieva, Martin Nikl, Akihiro Fukabori, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

In this study, (Gd1-xYx)F3 (x=0.2, 0.4, 0.5 0.6 and 0.8) crystals were grown by the μ-PD method. Neither visible inclusions nor cracks were observed in (Gd1-xYx)F 3 (x=0.4, 0.5 and 0.6) crystals. Lattice constants increase linearly as the Y3 concentration decreases. Using (Gd1-xY x)F3 as a host material, the Sr0.5% Ce1%, 3%, 5% and 7% co-doped Gd0.5Y0.5F3 single crystal was prepared. In this crystal, Ce3-perturbed luminescence at 380 nm is observed with 31.8 ns photoluminescence decay time. Under X-ray excitation rather high radioluminescence intensity of this band was obtained exceeding that of BGO scintillator. The energy transfer in the sequence of regular Ce 3→ (Gd3)n→ perturbed Ce3 sites was evidenced though observation of decay time shortening of the regular Ce3 and Gd3 centers and intensity change between Gd 3 and Ce3-perturbed emission.

Original languageEnglish
Pages (from-to)37-41
Number of pages5
JournalJournal of Crystal Growth
Volume313
Issue number1
DOIs
Publication statusPublished - 2010 Dec 15

Keywords

  • A1. Luminescence
  • A2. Fluoride
  • A2. Micro-Pulling-Down method
  • A2. Single crystal
  • B1. Scintillator

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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