Growth and Luminescence Properties of Pr-doped Lu3(Ga,Al)5O12 Single Crystals

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概要

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• Single crystals with the nominal composition of (Pr0.01,Lu0.99)3(Gax,Al1-x)5O12 (Pr:LuGAG) were grown by the micro-pulling-down (μ-PD) method with RF heating and their luminescence properties were characterized. Transparent and crack free crystals that were slightly yellowish green were obtained. Lattice constants and densities systematically increased with increasing of Ga concentration. The luminescence properties of Pr:LuGAG were characterized by photoluminescence spectra and decays, radioluminescence spectra and light yield measurements. 5d–4f luminescence was observed for the $x\leq 0.6$ samples. It was found that the 5d–4f emission of Pr3+ is quenched only slightly up to $x\leq 0.4$ whereas density systematically increased in the range of $0\leq x\leq 1.0$.

• 2007-06-15

著者

• Nikl Martin

  Institute Of Physics

• Yoshikawa Akira

  Institute For Materials Research

• Fukuda Tsuguo

  Institute For Material Research Tohoku University

• PEJCHAL Jan

  Institute for Materials Research, Tohoku University

• Pejchal Jan

  Institute of Physics AS CR, Cukrovarnicka 10, 16253 Prague, Czech Republic

• Ogino Hiraku

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

• Fukuda Tsuguo

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

• Yoshikawa Akira

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

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