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Comparison of the Luminescence Properties of Dy3+ in α-Sialon and Oxynitride Glass

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Dy-α-sialon and -Si3N4 materials containing Dy-oxynitride glass were hot pressed at 1800°C for 1 h. The luminescence spectra of Dy3+ in these samples were compared when excited at 350 nm. The results showed that two strong emission bands in the region 470–500 nm and 570-600 nm, associated with the 4F9/26H15/2 and 4F9/26H13/2 transitions of Dy3+ ions, were observed in Dy-α-sialon. However, no emission peak was detected from the -Si3N4 sample, despite it containing the same amount of Dy3+ cations. This proved that only the Dy3+ cations in the α-sialon structure, not those in the oxynitride glass, produce the luminescence spectrum.
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Document Type: Communications

Affiliations: 1: The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, CAS, Shanghai 200050, China 2: School of Physics and Materials Engineering, Monash University, Victoria 3800, Australia 3: Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Nagoya 463-8560, Japan

Publication date: 2005-10-01

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