Journal
JOURNAL OF RARE EARTHS
Volume 29, Issue 10, Pages 951-953Publisher
ELSEVIER
DOI: 10.1016/S1002-0721(10)60576-5
Keywords
spectral properties; Yb:Sc2O3; transparent ceramics; rare earths
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Funding
- National Natural Science Foundation of China [50990300, 51102257]
- National Science Foundation of China [200801207]
- Natural Science Foundation of Shanghai, China [09ZR1435600, 10JC1416000]
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Yb:Sc2O3 transparent ceramics were fabricated by solid-state reaction and vacuum sintering method. CaO was added as sintering aids by a high energy ball milling. Transparent nearly-fully dense samples were obtained after 1840 degrees C sintering. Using transmitted-light microscope we get the grain sizes are more than 100 mu m. Using spectrophotometer we get the absorption coefficient centered at 975 nm was 2.65 cm(-1). The phosphorescence spectra showed that the line-widths (FWHM) at 975 and 1041 nm were about 4 and 10 nm and the lifetime of Yb ions in Sc2O3 transparent ceramics was about 883 mu s. According to the absorption and fluorescence band centers of Yb:Sc2O3 transparent ceramics, the level scheme of Yb3+ ions in Sc2O3 ceramics could be gotten.
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