| Cr4+在Al2O3多晶体中的光谱性能研究 |
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| 引用本文： | 杨秋红,曾智江,徐 军,丁 君,苏良碧.Cr4+在Al2O3多晶体中的光谱性能研究[J].物理学报,2006,55(8):4166-4169. |
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| 作者姓名： | 杨秋红 曾智江 徐 军 丁 君 苏良碧 |
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| 作者单位： | (1)上海大学材料科学与工程学院，上海 200072; (2)中国科学院上海光学精密机械研究所，上海 201800 |
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| 基金项目： | 国家自然科学基金(批准号：60578041)资助的课题. |
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| 摘 要： | 采用传统无压烧结工艺制备Cr:Al2O3透明多晶陶瓷.测定了其退火前后的吸收光谱和荧光光谱，发现在Al2O3六配位的八面体结构中，Cr4+的荧光发射也处在1100—1600nm波段的红外区间，荧光发射峰位于1223nm附近，类似Cr4+在四面体中的发光行为.同时由于氧化铝晶格常数较小，晶体场强较强，使Cr4+:Al2O3<
关键词：
4+')" href="#">Cr4+
2O3透明陶瓷')" href="#">Cr:Al2O3透明陶瓷
光谱性质
八面体
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| 关 键 词： | Cr4+ Cr:Al2O3透明陶瓷 光谱性质 八面体 |
| 文章编号： | 1000-3290/2006/55(08)/4166-04 |
| 收稿时间： | 11 29 2005 12:00AM |
| 修稿时间： | 2005-11-292006-04-21 |
Spectroscopic characteristics of Cr4+ in transparent polycrystalline Al2O3 |
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| Yang Qiu-Hong,Zeng Zhi-Jiang,Xu Jun,Ding Jun and Su Liang-Bi.Spectroscopic characteristics of Cr4+ in transparent polycrystalline Al2O3[J].Acta Physica Sinica,2006,55(8):4166-4169. |
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| Authors: | Yang Qiu-Hong Zeng Zhi-Jiang Xu Jun Ding Jun and Su Liang-Bi |
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| Institution: | 1 School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China;2 Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China |
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| Abstract: | Transparent polycrystalline Cr:Al2O3 ceramics were synthesized by conventional pressureless synthesis processing. The absorption and emission spectra of Cr:Al2O3 ceramics specimens before and after annealing were measured at room temperature. It was discovered that the emission spectra of Cr4+ in Al2O3 octahedral coordination site is in infrared wavelength range of 1100—1600nm. The emission peak of Cr4+ is centered at 1223nm, which is similar to that of Cr4+ in tetrahedral site. Al2O3 has smaller lattice constant, resulting in the larger crystal field strength, so there is a blue shift in the peak of Cr4+:Al2O3 ceramics compared to those of other Cr4+-doped crystals. And the emission band is much narrower with full width at half maximum Δλ 37nm. |
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| Keywords: | Cr 4+ ion transparent Cr:Al_2O_3 ceramics spectroscopic characteristics octahedron |
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