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Cr4+在八面体格位中的光谱特性研究
引用本文:张 丹,苏良碧,徐 军,杨秋红,张连翰,李红军.Cr4+在八面体格位中的光谱特性研究[J].物理学报,2006,55(6):3193-3196.
作者姓名:张 丹  苏良碧  徐 军  杨秋红  张连翰  李红军
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
摘    要:采用提拉法生长了Cr单掺和Cr,Mg共掺Al2O3晶体,后者具有900—1600nm的宽带吸收.研究了该吸收带在不同气氛、不同温度退火下的变化规律.通过建立合理的晶格缺陷模型,成功地解释了所有的实验结果,并确定Cr,Mg共掺Al2O3晶体红外波段宽吸收带属于八面体格位中的Cr4+离子. 关键词: 4+离子')" href="#">Cr4+离子 八面体格位 晶格缺陷

关 键 词:Cr4+离子  八面体格位  晶格缺陷
文章编号:1000-3290/2006/55(06)/3193-04
收稿时间:12 21 2005 12:00AM
修稿时间:2005-12-212006-01-14

Spectroscopic behavior of Cr4+ in octahedral sites
Zhang Dan,Su Liang-Bi,Xu Jun,Yang Qiu-Hong,Zhang Lian-Han and Li Hong-Jun.Spectroscopic behavior of Cr4+ in octahedral sites[J].Acta Physica Sinica,2006,55(6):3193-3196.
Authors:Zhang Dan  Su Liang-Bi  Xu Jun  Yang Qiu-Hong  Zhang Lian-Han and Li Hong-Jun
Institution:1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China ;2. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
Abstract:Cr-doped and Mg,Cr-codoped Al2O3 crystals were grown by Czochralski method. The latter has a broad absorption peak in 900—1600nm region. We investigated the change of the absorption band with annealing under different atmospheres or temperatures. Through establishing a structure defect model, we successfully interpreted all the experiment results and confirmed that the extremely broad infrared absorption band belonged to Cr4+, which should occupy the octahedral sites in Al2O3.
Keywords:Cr4+ ions  octahedral sites  structure defect
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