高压下白云石的原位拉曼光谱研究

基金项目:

国家重点科技攻关项目(305项目)

Study on In-situ Raman Spectra of Dolomite under High Pressure

1.
The Faculty of Earth Resources, China University of Geosciences
2.
The Faculty of Earth Resources, China University of Geosciences, State Key Laboratory of Geological Process and Mineral Resources, China University of Geosciences Wuhan

摘要: 利用热液金刚石压腔研究了白云石在温度298 K、压力100～1000 MPa下C-O键弯曲振动峰V1097的拉曼变化特征.结果表明,在实验的压力范围内白云石稳定,其拉曼位移和压力具有很好的线性关系,拟合后得出压力与白云石1097 cm-1拉曼线频率位移的关系为:P=143.47(△Vp)1097 102.67(1097＜Vp＜1103).因此白云石非常适合作为热液金刚石压腔的压标.
- 热液金刚石压腔 /
- 白云石 /
- 拉曼光谱 /
- 压标
Abstract: The variation characters of Raman spectra of C—O bandliberation peak ν1097 of dolomite at the experiment pressure of 100~1000 MPa and temperature of 298 K were studied using hydrothermal diamond anvil cell (HDAC). The results show that dolomite is stable under the experimental pressure with good correlation between the Raman peak position shift and the pressure. The relationship between the system pressure and Raman peak position shift of calcite (1097 cm-1) is given as follow: p=143.47(Δνp)1097+102.67 (1097<νp<1103). Therefore, dolomite can be used as a pressure gauge for the hydrothermal diamond anvil cell.
- hydrothermal /
- diamond /
- anvil /
- cell