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Cr,Mg:GSGG晶体生长、光谱性能及Cr4+形成机理的研究
  • ISSN号：1000-3290
  • 期刊名称：物理学报
  • 时间：0
  • 页码：481-485
  • 分类：O781[理学—晶体学]
  • 作者机构：[1]中国科学院上海硅酸盐研究所,上海201800, [2]中国科学院研究生院,北京100049
  • 相关基金：国家自然科学基金（批准号：60938001 60908030）资助的课题
  • 相关项目：无激发态吸收的Yb3+离子非线性可饱和吸收现象和机理的研究
作者： 姜大朋|苏良碧|徐军|唐慧丽|吴锋|郑丽和|王庆国|郭鑫|邹宇琦|
关键词： Cr, Mg:GSGG单晶, 退火处理, 四面体格位, 光谱性质, Cr, Mg：GSGG crystal, annealing treatment, tetrahedral sites, spectroscopic characteristics
中文摘要：

采用传统提拉法单晶生长技术成功生长出了Cr,Mg：GSGG晶体,并对生长出的晶体样品进行了氧化气氛和还原气氛退火处理.通过对比分析退火处理前后样品吸收光谱的变化,推断出晶体中四面体配位Cr~（4＋）离子的形成机理为：晶体生长和高温氧化气氛退火的过程中,四价Cr~（4＋）离子首先在八面体格位上形成,然后在热激发作用下与邻近四面体格位上的Ga~（3＋）离子发生置换反应,从而形成一定浓度的四面体配位Cr~（4＋）离子.实验结果还表明,随着电荷补偿离子Mg~（2＋）离子浓度的增大,更有利于提高四面体配位Cr~（4＋）离子的浓度.

英文摘要：

Cr,Mg：GSGG crystals are successfully grown by the Czochralski method.The influences of reducing- and oxidizing- annealing treatments on the absorption spectra of Cr,Mg：GSGG crystals are investigated.From the changes of their absorption spectra,it can be inferred that the Cr4＋ ions are initially generated at octahedrally coordinated sites,and then exchange positions with tetrahedral Ga3＋ ions in neighboring sites under heat exciting.Differences between absorption spectra also suggest that Mg2＋ ions can improve the concentration of tetrahedral Cr4＋ ions.

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期刊信息
  • 《物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京603信箱(中国科学院物理研究所)
  • 邮编：100190
  • 邮箱：apsoffice@iphy.ac.cn
  • 电话：010-82649026
  • 国际标准刊号：ISSN：1000-3290
  • 国内统一刊号：ISSN：11-1958/O4
  • 邮发代号:2-425
  • 获奖情况:
  • 1999年首届国家期刊奖,2000年中科院优秀期刊特等奖,2001年科技期刊最高方阵队双高期刊居中国期刊第12位
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  • 被引量:49876