Effects of La, Gd, or Lu co-doping on crystal growth and scintillation properties of Eu:SrI2single crystals

Kei Nishimoto, Yuui Yokota, Shunsuke Kurosawa, Jan Pejchal, Kei Kamada, Valery Chani, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Eu:SrI2and La, Gd or Lu co-doped Eu:SrI2single crystals were grown by a modified micro-pulling-down method and the effects of rare-earth (RE) co-doping on the crystal growth and scintillation properties were investigated. RE-free Eu7.5 mol%:SrI2and La, Gd or Lu 1 mol% co-doped Eu7.5 mol:SrI2single crystals with high transparency were obtained. The powder X-ray diffraction measurements revealed that all the grown crystals had a single phase of SrI2structure. In the X-ray radioluminescence spectra, emission peaks around 435 nm were observed for the Eu:SrI2and La co-doped Eu:SrI2specimens. The light yield of the La co-doped Eu7.5%:SrI2specimens were lower than that of the RE-free Eu7.5%:SrI2specimen due to the generation of some defects by La co-doping.

Original languageEnglish
Pages (from-to)484-488
Number of pages5
JournalJournal of Crystal Growth
Volume401
DOIs
Publication statusPublished - 2014 Sep 1

Keywords

  • A1. Growth from melt
  • A2. Single crystal growth
  • B1. Halides
  • B2. Scintillator materials
  • B3. Scintillator

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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