High Transparency Nd: Y2O3 Ceramics Prepared with La2O3 and ZrO2 Additives |
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| Authors: | Lei Zhang Zuocai Huang Wei Pan |
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| Affiliation: | State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China |
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| Abstract: | High transparency Nd: Y2O3 ceramics were prepared by vacuum sintering with La2O3 and ZrO2 sintering additives. The optimum in‐line transmittance of the sintered Nd: Y2O3 is 80.98% at the wavelength of 1100 nm, for which the content of La2O3 and ZrO2 are 10.0 and 3.0 at.%, respectively. This specimen demonstrates homogeneous microstructure with the average grain size of 8.3 μm. The mechanism of sintering with La2O3 and ZrO2 aids and the optical properties was discussed. The absorption, emission cross section, and fluorescence lifetime have been estimated as 1.62 × 10?20 cm2, 5.13 × 10?20 cm2, and 232 μs, respectively. Vickers hardness and the fracture toughness were measured of 9.18 GPa and 1.03 Mpa·m1/2, respectively. All the results indicate that Nd: Y2O3 transparent ceramic is a promising candidate for laser material. |
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