Characteristics and optical spectra of V : YAG crystal grown in reducing atmosphere
文献类型：期刊论文
| 作者 | Zhang Dan ; Su LB(苏良碧) ; Li HJ(李红军) ; Qian Xiaobo ; Xu J(徐军) |
| 刊名 | j. cryst. growth
 |
| 出版日期 | 2006 |
| 卷号 | 294期号:2页码:437 |
| 关键词 | absorption spectra reducing atmosphere as-grown crystal graphite-heating elements |
| ISSN号 | 0022-0248 |
| 中文摘要 | a v:yag single crystal was grown by the temperature gradient technique (tgt) with graphite-heating elements. the as-grown crystal has different colorations of light green and yellow brown in different parts. distribution of vanadium in three samples with different colorations was determined by inductively coupled plasma-mass spectrometry. from the absorption spectrum of the yellow-brown part with peaks at 370, 820 and 1320nm, we can deduce that the reducing atmosphere of carbon diffused from the heating elements can increase the concentration of tetrahedral v3+ ions and induce f color centers. all three samples exhibited light-green color after annealing in vacuum or h-2 atmospheres. in the vacuum annealing process, the v3+ ions in tetrahedral positions were enhanced through two methods: one method is the exchanging of octahedral v3+ and tetrahedral al3+ ions in neighboring sites under thermal excitation, the other is that f color centers were thoroughly eliminated and the escaped free electrons could be captured by v ions with higher valance states to further improve the concentration of tetrahedral v3+ ions. besides the two mechanisms, the h-2 annealing process greatly improved the v-tetra(3+) ions through the reduction effect of h-2. (c) 2006 elsevier b.v. all rights reserved. |
| 学科主题 | 光学材料;晶体 |
| 收录类别 | EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000240707800049 |
| 公开日期 | 2009-09-24 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/5623]  |
| 专题 | 上海光学精密机械研究所_激光与光电子功能材料研发中心 |
| 推荐引用方式 GB/T 7714 | Zhang Dan,Su LB,Li HJ,et al. Characteristics and optical spectra of V : YAG crystal grown in reducing atmosphere[J]. j. cryst. growth,2006,294(2):437, 441. |
| APA | Zhang Dan,苏良碧,李红军,Qian Xiaobo,&徐军.(2006).Characteristics and optical spectra of V : YAG crystal grown in reducing atmosphere.j. cryst. growth,294(2),437. |
| MLA | Zhang Dan,et al."Characteristics and optical spectra of V : YAG crystal grown in reducing atmosphere".j. cryst. growth 294.2(2006):437. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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