Shaped crystal growth and scintillating properties of Yb:(Gd,Lu) 3Ga5O12 solid solutions

A. Novosselov, A. Yoshikawa, M. Nikl, N. Solovieva, J. H. Lee, T. Fukuda

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Shaped single crystals of (LuxGd1-x) 3Ga5O12 (0.0≤x≤1.0) and (Yb 0.05LuxGd0.95-x)3Ga 5O12 (0.0≤x≤0.9) were grown by the modified micro-pulling-down method. Continuous solid solutions with garnet structure and a linear compositional dependency of crystal lattice parameter in the system Yb:(Gd,Lu)3Ga5O12 are formed. Measured optical absorption spectra of the samples show 4f-4f transitions related to Gd 3+ ion at 275 and 310 nm, and also an onset of charge transfer transitions from oxygen ligands to Gd3+ or Yb3+ cations below 240 nm. A complete absence of Yb3+ charge transfer luminescence under X-ray excitation in any of the investigated samples was explained by the overlapping of charge transfer absorption of Yb3+ by that of Gd 3+ ions. For specific composition of Lu1.5Gd 1.5Ga5O12 an intense defect-host lattice-related emission, which achieve of about 40% integrated intensity compared with Bi4Ge3O12, was found.

Original languageEnglish
Pages (from-to)481-483
Number of pages3
JournalRadiation Measurements
Volume38
Issue number4-6
DOIs
Publication statusPublished - 2004 Aug

Keywords

  • Garnet
  • Scintillating properties
  • Shaped single crystal growth
  • Yb doping

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

Fingerprint Dive into the research topics of 'Shaped crystal growth and scintillating properties of Yb:(Gd,Lu) <sub>3</sub>Ga<sub>5</sub>O<sub>12</sub> solid solutions'. Together they form a unique fingerprint.

  • Cite this