| 共沉淀法合成Yb3+∶Y2O3纳米粉及透明陶瓷的性能 |
| Synthesis of Yb3+∶Y2O3 Nanocrystalline by Co-precipitation Method and the Properties of Transparent Ceramics |
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| 摘要: 以Y2O3为基质材料，掺杂不同含量的Yb3+，采用共沉淀法制备出性能良好的Yb3+∶Y2O3纳米粉,将粉体在1 700 ℃和真空度为1×10-3 Pa下烧结5 h得到Yb3+∶Y2O3透明陶瓷。用XRD、TEM、UV-Vis、FL分别对样品的结构、形貌和发光性能进行了研究。结果表明：Yb3+完全固溶于Y2O3的立方晶格中，Yb3+∶Y2O3粉体大小均匀，近似球形,尺寸约40～60 nm。Yb3+∶Y2O3透明陶瓷相对密度为99.7%，在波长600～800 nm范围内其透光率达到80%。Yb3+∶Y2O3透明陶瓷在950 nm处吸收线宽达到26 nm，在1 031 nm和1 076 nm处的发射线宽分别为13 nm和17 nm。 |
| 关键词: 共沉淀 Yb3+∶Y2O3 透明陶瓷 |
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| Abstract: 3+∶Y2O3 nanocrystalline powder was prepared by co-precipitation method using a matrix material of Y2O3 doped with different concentrations of Yb3+, and the Yb3+∶Y2O3 transparent ceramics was fabricated by vacuum sintering at 1 700 ℃, 1×10-3 Pa for 5 h. The structural,morphological and luminescence properties of the sample were charactericzed by XRD, TEM, fluorescence analyzer. The results show that Yb3+ dissolves completely in the Y2O3 cubic phase, the particles of Yb3+∶Y2O3 are nearly spherical with narrow size distribution and the average diameter of the particles is in the range of 40～60 nm. The relative density of Yb3+∶Y2O3 transparent ceramics is 99.7%, the transmittance of the Yb3+∶Y2O3 transparent ceramics exceeds 80% at the wavelength range of 600～800 nm. The FWHM (Full width at Half Maximum) of the absorption peak around 950 nm of Yb3+∶Y2O3 transparent ceramics is 26 nm, the FWHM of the emission peaks around 1 031 nm and 1 076 nm of these ceramic samples are 13 nm and 17 nm. |
| Keywords: co-precipitation method Yb3+∶Y2O3 transparent ceramics |
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| 罗军明,李永绣,邓莉萍.共沉淀法合成Yb3+∶Y2O3纳米粉及透明陶瓷的性能[J].无机化学学报,2008,24(2):260-264. |
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