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Spectroscopic properties of Yb3+-doped Y3Al5O12 nano-ceramics obtained under different sintering pressures |
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| Authors: | W. Zhao D. Hreniak G. Boulon W. Strek A. Brenier M. Yin P. Gluchowski A. Lukowiak R. Wiglusz T. Epicier |
| Affiliation: | 1. Physical Chemistry of Luminescent Materials, University of Lyon, Claude Bernard/Lyon1 University, UMR 5620 CNRS, 69622 Villeurbanne, France;2. Physical Department, University of Science and Technology of China, Hefei 230026, China;3. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland;4. Matériaux, Ingénierie et Sciences (MATEIS), CNRS UMR 5510, University of Lyon, INSA-Lyon, 69621 Villeurbanne, France |
| Abstract: | Yb3+:YAG nano-ceramics have been obtained by a low temperature/high pressure sintering process. Structural properties have been studied by X-ray diffraction (XRD). Grain sizes and R.M.S micro-strains have been calculated based on the XRD patterns by Rietveld analysis method. Emission spectra and decay curves have been recorded and analyzed. It has been observed that the decay time decreases with the increase of sintering pressure. Presence of Yb3+–Yb3+ pairs have been detected by cooperative emission spectroscopy. |
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