Structural study of minerals as a function of temperature, pressure and composition

作为温度、压力和成分函数的矿物结构研究

• 批准号: 03640664
• 负责人: KUDOH Yasuhiro
• 金额: $ 1.28万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03640664/
• 关键词: Diamond anvil; High pressure; X-ray diffraction; Synchrotron radiation; Superhydrous phase B; Phase F; Hedenbergite; superhydrous phase B; fluorlte; calcite; hedenbergite; fluorite; ルビ-ケイ光法

Structural studies at high pressures of fluorite, CaF_2, hedenbergite, CaFeSi_2O_6, Superhydrous phase B, Mg_<20>Si_6H_8O_<36> and Phase F, Mg_<3.35>Si_<5.51>H_<7.26>O_<18> were done using a diamond anvil high pressure cell and monochromatized synchrotron radiation at Photon Factory, National Laboratory for High Energy Physics.Pressure induced phase transition of CaF_2 from cubic fluorite structure to the alpha-PbCl_2 type structure below 8.3 GPa was confirmed.The increase of bulk modulus with increasing Fe content of Ca(Fe, Mg)Si_2O_6 was observed.The crystal structure of superhydrous phase B was determined. The effect of pressure on the crystal structure was studied up to 6.5 GPa. The bulk modulus observed was 145 GPa.The cation-disordered crystal structure of phase F was determined using a small single crystal with dimensions of 18_x24_x30 micron.

利用国家高能物理实验室光子工厂的单色同步辐射，在高压条件下研究了氟石、CaF_2、hedenberite、CaFeSi_2O_6、超水相Mg_<20>Si_6H_8O_<36>和相Mg_<3.35>Si_<5.51>H_<7.26>O_<18>的结构。在8.3 GPa以下，CaF_2由立方萤石结构转变为α - pbcl_2型结构。Ca(Fe, Mg)Si_2O_6的体积模量随Fe含量的增加而增加。测定了超水相B的晶体结构。在6.5 GPa压力下，研究了压力对晶体结构的影响。观察到的体积模量为145 GPa。用尺寸为18_x24_x30微米的小单晶测定了F相的阳离子无序晶体结构。

项目成果

工藤康弘: "(Mg,Fe)SiO_3 perovskiteの結晶構造中のFe." 日本結晶学会誌. 35. 204-208 (1993)

Yasuhiro Kudo：“(Mg,Fe)SiO_3 钙钛矿晶体结构中的 Fe”。日本晶体学会杂志 35. 204-208 (1993)。

Y.Kudoh, T.Nagase, S.Ohta, S.Sasaki and M.Kanzaki: "Crystal structure and compressibility of superhydrous phase B, Mg_<20>Si_6H_8O_<36>" Proceeding of 14th AIRAPT Conf.(in press). (1994)

Y.Kudoh、T.Nagase、S.Ohta、S.Sasaki 和 M.Kanzaki：“超水相 B、Mg_<20>Si_6H_8O_<36> 的晶体结构和可压缩性”第 14 届 AIRAPT 会议论文集（正在印刷中）。

Y.Kudoh, T.Nagase, S.Ohta, S.Sasaki, M.Kanzaki and M.Tanaka: "High pressure structural study of superhydrous phase B, Mg_<20>Si_6O_<36> using a diamond anvil and single crystal X-ray diffraction method" Submitted to KEK Progress Report. (1994)

Y.Kudoh、T.Nagase、S.Ohta、S.Sasaki、M.Kanzaki 和 M.Tanaka：“使用金刚石砧和单晶 X 对超水相 B、Mg_<20>Si_6O_<36> 进行高压结构研究

工藤康弘: "ダイヤモンドアンビル高圧セルを用いた高温高圧X線回折実験" 鉱物学雑誌. 21. 257-261 (1992)

Yasuhiro Kudo：“使用金刚石砧高压池进行高温高压 X 射线衍射实验”《矿物学杂志》21. 257-261 (1992)。

Y.Kudoh,T.Nagase,S.Ohta,S.Sasaki: "Crystal structure analysis of fluorite,CaF_2 at 7 GPa using a diamond anvil and single crystal X-ray diffraction method" KEK Progress Report. 93-1. 214 (1993)

Y.Kudoh、T.Nagase、S.Ohta、S.Sasaki：“使用金刚石砧和单晶 X 射线衍射方法在 7 GPa 下对萤石 CaF_2 进行晶体结构分析”KEK 进度报告。