Thermal and Optical Properties of Yb3+-Doped Y2O3 Single Crystal Grown by the Micro-Pulling-Down Method
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概要
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Refractory rare-earth sesquioxides (RE2O3, RE = Y, Lu, Sc) are promising host materials for solid-state lasers due to low phonon energy and high thermal conductivity. In this work, we investigated thermodynamic properties of Yb3+-doped Y2O3 single crystals, doping level $\leq 15$ mol % Yb3+ grown by the micro-pulling-down method (μ-PD). The thermal diffusivity lowers with increasing Yb3+ content from 7.2 to $2.37 \times 10^{-6}$ m2 s-1, heat capacity from 0.44 to 0.403 J g-1 K-1, and thermal conductivity from 15.94 to 5.35 W m-1 K-1. Spectroscopic data are discussed.
- 2006-07-15
著者
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OHTA Hiromich
Department of Materials Science, Ibaraki University
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Jouini Anis
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Isshiki Minoru
Instite For Advanced Materials Processing Tohoku University
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Boulon Georges
Physical Chemistry Of Luminescent Materials Umr 5620 Cnrs Claude Bernard/lyon1 University
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Mun Ji
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Novoselov Andrey
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Kasamoto Tsuyoshi
Department Of Materials Science Ibaraki University
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Yoshikawa Akira
Institute For Materials Research
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Waseda Yoshio
Institute For Advanced Materials Processing
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Fukuda Tsuguo
Institute For Material Research Tohoku University
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Shibata Hiroyuki
Institute For Advanced Materials Processing Tohoku University
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Mun Ji
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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Waseda Yoshio
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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Ohta Hiromich
Department of Materials Science, Ibaraki University, Hitachi, Ibaraki 316-8511, Japan
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Boulon Georges
Physical Chemistry of Luminescent Materials, UMR 5620 CNRS, Claude Bernard/Lyon1 University, Villeurbanne 69622, France
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Novoselov Andrey
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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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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