Crystal growth, Nd distribution and luminescence properties of (Na 0.425xLu0.575-x-yNdy)F2.15-2x single crystals

Yuki Furuya, Hidehiko Tanaka, Kentaro Fukuda, Noriaki Kawaguchi, Yuui Yokota, Takayuki Yanagida, Valery Chani, Martin Nikl, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

(Na0.425xLu0.575-x-yNdy)F 2.15-2x (x=0, y=0, 0.001, 0.01, 0.05, 0.1, 0.2; x=±0.01, 0.02, 0.05, y=0.05) single crystals were grown from the melt using the precise atmosphere control type Micro-Pulling-Down (μ-PD) method to examine their potential as a new VUV scintillators. The grown crystals were single-phase materials with fluorite type structure (Fm-3m, Z=4) as confirmed by XRD and had good crystallinity. The distribution of the crystal constituents in axial and radial directions was evaluated, and only negligible non-uniformity along growth axis was detected. The crystals demonstrated 7090% transmittance above 176188 nm wavelength and Nd3 5d4f luminescence (when exited by X-ray) observed around 185 nm. Both 5d4f absorption and emission peaks shifted to longer wavelength region. The radioluminiscence measurements under 5.5 MeV α-ray excitation (241Am) demonstrated the light yield of 3590 [Ph/5.5 MeV-α] and the decay time of 5.57.5 ns.

Original languageEnglish
Pages (from-to)791-795
Number of pages5
JournalJournal of Crystal Growth
Volume318
Issue number1
DOIs
Publication statusPublished - 2011 Mar 1

Keywords

  • A1. Radiation
  • A2. Single crystal growth
  • B1. Inorganic compound
  • B2. Scintillater materials
  • B3. Scintillators

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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