首页|(163002)Fabrication and luminescence properties of highly transparent and submicrometer-grained Yb:Y_2O_3 ceramics by hot-pressing sintering
(163002)Fabrication and luminescence properties of highly transparent and submicrometer-grained Yb:Y_2O_3 ceramics by hot-pressing sintering
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NSTL
Elsevier
Highly transparent and submicrometer-grained Yb:Y_2O_3 ceramics were obtained by hot-pressing method with ZrO_2 sintering additive. Hot-pressing method provides extra driving force to promote the densification of Yb:Y_2O_3 transparent ceramics, resulting in high transmittance achieved. The transmittances of all samples were ranging from 80.5% to 81.8% at 1100 nm and 72.7-77.7% at 600 nm. The ceramic samples in this work were sintered at a low temperature of 1600 °C for 3 h, providing dense microstructures with average grain size less than 1 um, which are smaller than those of Yb:Y_2O_3 ceramics prepared by other traditional sintering techniques. The microhardness and fracture toughness were ranging from 8.16 to 7.99 GPa, and from 0.94 to 0.88 MPa-m~(1/2), respectively, which are higher than the comparison samples fabricated by pressureless sintering. The absorption cross-sections of the 1 at% Yb-doped sample at 950 and 976 nm were 0.93 × 10~(-20) and 1.22 × 10~(-20) cm~2, respectively. The fluorescence decay lifetime at 1032 nm was in the range of 0.79-1.36 ms. According to the available literature, this is the first report about Yb:Y_2O_3 transparent ceramics fabricated by hot-pressing sintering without any combined sintering process. The ceramics obtained may have potential use for solid-state lasers partly replacing single crystals.
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Material Science and Eng
NSTL
Elsevier
