Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7898210 | Journal of the European Ceramic Society | 2018 | 6 Pages |
Abstract
0.5-5.0â¯at.% Nd3+ doped (Ca0.94Gd0.06)F2.06 transparent ceramics were fabricated by vacuum hot-pressing sintering. The structural, spectroscopic and thermal properties of Nd:(Ca0.94Gd0.06)F2.06 transparent ceramics, as well as the influence of Nd3+ content on these properties were investigated. The as-fabricated ceramic samples exhibited high transparency and nearly pore-free microstructure. The absorption peaks located at 538â¯nm, 576â¯nm, 736â¯nm, 792â¯nm and 865â¯nm were attributed to the transitions from ground state to the excited states of Nd3+ ions, and the absorption coefficients increased linearly with Nd3+ content increasing. The emission band of the sample doped with 1â¯at.% Nd3+ concentration exhibited the highest emission intensity, while the lifetime decreased sharply with the increase of Nd3+ concentration. In addition, with Nd3+ content increasing from 0.5 to 5.0â¯at.%, the thermal expansivity coefficients increased slightly, while the thermal conductivity decreased from 4.21 to 2.36â¯W/mâ¯K at room temperature.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Guoqiang Yi, Weiwei Li, Jinghong Song, Bingchu Mei, Zhiwei Zhou, Liangbi Su,