Crystal growth and scintillation properties of Nd-doped Lu 3Al5O12 single crystals with different Nd concentrations

Makoto Sugiyama, Yutaka Fujimoto, Takayuki Yanagida, Yuui Yokota, Jan Pejchal, Yuki Furuya, Hidehiko Tanaka, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Nd 0.1%, 0.5%, 1% and 3% doped Lu3Al5O12 (Nd:LuAG) single crystals were grown in the nitrogen atmosphere by the micro-pulling down (μ-PD) method. The grown crystals had a single-phase confirmed by powder XRD analysis. In absorption spectra, some weak absorption lines due to Nd3+ 4f-4f transitions were observed and their intensity increased with the increase of Nd concentration. When excited by 241Am α-ray, a broad emission peak due to defects in the host lattice at 320 nm and some sharp lines due to Nd3+ 4f-4f transitions at wavelength longer than 400 nm were observed. The decay time profiles of Nd:LuAG under γ-ray excitation were well approximated by two exponential function of 340-760 ns and 3-5 μs for each sample. By pulse height measurement using 137Cs, Nd 0.5%:LuAG showed the highest light yield of 7600 ± 760 photons/MeV.

Original languageEnglish
Pages (from-to)905-908
Number of pages4
JournalOptical Materials
Volume33
Issue number6
DOIs
Publication statusPublished - 2011 Apr

Keywords

  • LuAG
  • Scintillator
  • Single crystal

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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