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Title: Cubic to tetragonal phase transition of Tm{sup 3+} doped nanocrystals in oxyfluoride glass ceramics

Tm{sup 3+} ions doped β-PbF{sub 2} nanocrystals in oxyfluoride glass ceramics with different doping concentrations and thermal temperatures are prepared by a traditional melt-quenching and thermal treatment method to investigate the structure and the phase transition of Tm{sup 3+} doped nanocrystals. The structures are characterized by X-ray diffraction Rietveld analysis and confirmed with numerical simulation. The phase transitions are proved further by the emission spectra. Both of the doping concentration and thermal temperature can induce an O{sub h} to D{sub 4h} site symmetry distortion and a cubic to tetragonal phase transition. The luminescence of Tm{sup 3+} doped nanocrystals at 800 nm was modulated by the phase transition of the surrounding crystal field.
Authors:
; ; ; ;  [1] ;  [1] ;  [2]
  1. The Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin 300071 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22492424
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 2; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CERAMICS; COMPUTERIZED SIMULATION; CONCENTRATION RATIO; CRYSTAL FIELD; CUBIC LATTICES; DOPED MATERIALS; EMISSION SPECTRA; GLASS; HEAT TREATMENTS; LEAD FLUORIDES; LUMINESCENCE; NANOSTRUCTURES; OXYFLUORIDES; PHASE TRANSFORMATIONS; TETRAGONAL LATTICES; THULIUM IONS; X-RAY DIFFRACTION