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Title: Band-gap modulation via gallium substitution in cerium doped gadolinium aluminum garnet using a mixed fuel combustion approach

Cerium doped Gadolinium garnets (Gd{sub 3}Al{sub x}Ga{sub 5−x}O{sub 12} where 0≤x≤5) are synthesized via combustion synthesis using mixture of urea and glycine fuels. A 4h Post annealing at 1400 oC is found to be necessary for pure phase formation. Lattice spacing variation as a result of partial or total Ga substitution at Al site was mapped by X-ray diffraction. Photoluminescence emission of Ce shifts as a consequence of Ga substitution and therefore suggests a local re-adjustment of crystal field around activator site.
Authors:
; ; ;  [1]
  1. Crystal Technology Section, Technical Physics Division, Bhabha Atomic Research Centre, Mumbai- 400085 (India)
Publication Date:
OSTI Identifier:
22269285
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; ALUMINIUM; ANNEALING; CERIUM; COMBUSTION; CRYSTAL FIELD; DOPED MATERIALS; FUELS; GADOLINIUM; GALLIUM; GARNETS; GLYCINE; MIXTURES; PHOTOLUMINESCENCE; SYNTHESIS; UREA; X-RAY DIFFRACTION