Luminescence and structural properties of rare-earth doped YAG nanoceramics

Robert Fedyk 1,  Dariusz Hreniak 2,  Witold Łojkowski 1,  Wiesław Stręk 2

1. Polish Academy of Sciences, Institute of High Pressure Physics (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland
2. Polish Academy of Sciences, Institute of Low Temperature and Structure Research (INTiBS), Okólna 2, Wrocław 50-422, Poland

Abstract

Transparent YAG nanoceramics composed of nanosized grains were fabricated by high pressure low temperature sintering technique. Absorption and luminescence spectra were measured. It was fount that the emission properties of Nd3+ ions in YAG nanoceramic was different than in single crystal. An increase of the applied pressure during sintering cause some special effects like broadening of full-wide at haft maximum of emission lines and decrease of luminescence lifetimes. XRD analysis indicate presence of microstrain in nanoceramics and no significant grain growth during sintering process. Influence of microstrains on luminescence properties of rare-earth ions was analysed.

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Presentation: Poster at E-MRS Fall Meeting 2006, Symposium C, by Robert Fedyk
See On-line Journal of E-MRS Fall Meeting 2006

Submitted: 2006-05-15 10:33
Revised:   2006-06-26 12:41
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