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Title: Magnetization-induced enhancement of photoluminescence in core-shell CoFe{sub 2}O{sub 4}@YVO{sub 4}:Eu{sup 3+} composite

After the core-shell CoFe{sub 2}O{sub 4}@YVO{sub 4}:Eu{sup 3+} composite synthesized through a facile sol-gel method was magnetized under an external magnetic field of 0.25 T for 4 h, an enhancement of ∼56% in photoluminescence intensity was observed. The remanent magnetization of the CoFe{sub 2}O{sub 4} core increases the intensity of the excited charge transfer transition of VO{sub 4}{sup 3−} group in YVO{sub 4}:Eu{sup 3+} shell, which may enhance the probability related to the Eu{sup 3+} radiative transition {sup 5}D{sub 0}-{sup 7}F{sub 2}, yielding to a high photoluminescence. The obvious remanent-magnetization-induced enhancement in photoluminescence is helpful in developing excellent magnetic/luminescent material for the practical display devices.
Authors:
; ;  [1] ; ;  [2] ;  [3] ;  [4]
  1. Department of Physics, Zhejiang Normal University, Jinhua 321004 (China)
  2. College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004 (China)
  3. School of Materials Science and Technology, China University of Geosciences, Beijing 100083 (China)
  4. Department of Physics, Shanghai University of Electric Power, Shanghai 200090 (China)
Publication Date:
OSTI Identifier:
22258705
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 114; Journal Issue: 21; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COBALT OXIDES; DISPLAY DEVICES; EUROPIUM IONS; MAGNETIC FIELDS; MAGNETIZATION; PHOTOLUMINESCENCE; SHELLS; SOL-GEL PROCESS; VANADATES