Journal
NANO LETTERS
Volume 9, Issue 2, Pages 721-724Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl803244v
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Funding
- Research Foundation GOA of Katholieke Universiteit Leuven
- Flemish Science Foundation FWO
- Belgian IAP
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A bright persistent photoluminescence has been observed in Er3+-doped nanoparticles prepared by selective dissolution of bulk oxyfluoride nano-glass-ceramics. A 2 orders of magnitude decrease of intensity of the S-4(3/2)-> I-4(15/2) green emission band of Er3+ in these nanoparticles is observed in magnetic fields up to 50 T. This strong luminescence sensitivity to magnetic field can be used for localization and distant optical detection of magnetic field in nanovolumes with a field-resolution of 0.01 T.
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