石膏的高压原位Raman光谱和相变研究

马艳平; 李芳菲

doi:10.11858/gywlxb.2012.03.018

石膏的高压原位Raman光谱和相变研究

doi: 10.11858/gywlxb.2012.03.018

马艳平^1,2,3, ,,
李芳菲⁴

1.
海南优势资源化工材料应用技术教育部重点实验室，海南海口 570228；
2.
硅锆钛资源综合开发与利用海南省重点实验室，海南海口 570228；
3.
海南大学材料与化工学院，海南海口 570228；
4.
吉林大学超硬材料国家重点实验室，吉林长春 130012

详细信息

通讯作者:
马艳平 mmyyp@yahoo.cn

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出版历程
- 收稿日期: 2011-01-18
- 修回日期: 2011-03-22
- 发布日期: 2012-06-15

In-situ Raman Study and Phase Transition of Gypsum under High Pressure

MA Yan-Ping^{1,2,3
, ,},
LI Fang-Fei⁴

1.
Key Laboratory of Ministry of Education for Application Technology of Chemical Materials in Hainan Superior Resources, Haikou 570228, China;
2.
Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, Haikou 570228, China;
3.
Hainan University Materials and Chemical Engineering, Haikou 570228,China;
4.
State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China

摘要

摘要: 利用金刚石对顶砧（DAC）高压装置产生高压，在0~35 GPa压力范围，对石膏（Gypsum，CaSO42H2O）晶体进行了高压原位Raman光谱研究。根据高压Raman光谱的实验数据，给出了石膏晶体Raman振动频率与压力的依赖关系；在4.5 GPa附近，在对称性伸缩振动范围，发现新的Raman峰1 012 cm-1出现，这个峰的强度随压力升高逐渐增强，据此断定在4.5 GPa 附近，石膏晶体发生了压力导致的结构相变。
- 石膏 /
- 高压Raman光谱 /
- 相变 /
- 金刚石对顶砧（DAC）
Abstract: In-situ high-pressure Raman study of the gypsum was carried out from 0 to 35 GPa with a diamond anvil cell (DAC). The authors determined the pressure dependences of the Raman bands of gypsum. A new Raman peak 1 012 cm-1 in the stretching vibration of range is found at pressure of about 4.5 GPa, and its intensity is shown to strengthen with increasing pressure. So we can determine the occurrence of pressure-induced phase transition near 4.5 GPa.
- gypsum /
- high-pressure Raman spectroscopy /
- phase transition /
- diamond anvil cell (DAC)

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参考文献(12)

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