Structure of molten GeO<sub>2</sub> probed by XAFS

LI Chenxi LU Kunquan NIU Xiaojuan WU Zhonghua

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Structure of molten GeO₂ probed by XAFS

更新时间：2021-03-12

- Structure of molten GeO₂ probed by XAFS
- NUCLEAR TECHNIQUES Issue 10, (2003)
- 作者机构：
  
  1. 中国科学院物理研究所
  2. 中国科学院高能物理研究所,北京,100080
  3. ,北京,100039
- 作者简介：
- 基金信息：
  
  国家自然科学基金973项目(TG1998061409)
- DOI：
  CLC： O472
- Published：01 October 2003
- 稿件说明：
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[1]李晨曦,陆坤权,牛小娟,吴忠华.熔态GeO_2结构的XAFS研究[J].核技术,2003(10):729-731.

LI Chenxi LU Kunquan NIU Xiaojuan WU Zhonghua. Structure of molten GeO₂ probed by XAFS[J]. Nuclear techniques, 2003, (10): 729-731.
[1]李晨曦,陆坤权,牛小娟,吴忠华.熔态GeO_2结构的XAFS研究[J].核技术,2003(10):729-731. DOI：

LI Chenxi LU Kunquan NIU Xiaojuan WU Zhonghua. Structure of molten GeO₂ probed by XAFS[J]. Nuclear techniques, 2003, (10): 729-731. DOI：

摘要

GeO

是光电领域内的重要材料

也是玻璃形成体基础材料之一。晶体GeO

有六方对称的石英结构（q-GeO

）和四面体对称的金红石结构（r-GeO

）。前者是重要的压电和光学材料

后者是半导体Ge的良好封装材料。两种晶态GeO

的熔点不同:q-GeO

的熔点为1115℃

而r-GeO

的熔点为1086℃。本工作解决了高温氧化物熔体XAFS实验中的困难

尝试了高温熔体XAFS实验的一种新的实验方法

采集了两种晶体形态GeO

熔化后不同温度的XAFS谱

并对照晶体和非晶体的室温XAFS谱

探讨了不同结构状态的熔体不同温度下的结构及其关联

特别是两种熔点之间的熔体结构状态。

Abstract

There are two types of morphologies of crystalline GeO2: quartz type (q-GeO2) and rutile type (r-GeO2) . The former is a good piezoelectric and optical material and the latter is important in electronics. The melting points of the two kinds of GeO2 are different: 1115℃ for q-GeO2 while 1086℃ for r-GeO2. We proposed a method to overcome the difficulties in the XAFS measurements for oxide melts under high temperature and have collected the XAFS spectra with high quality for molten q-GeO2 and r-GeO2. The structures of different melts from different crystalline solids and their correlation have been discussed

especially for temperatures between the two melting points.

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Structure of molten GeO2 probed by XAFS

DOI：

摘要

Abstract

关键词

Keywords

references

Structure of molten GeO₂ probed by XAFS