Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (1): 10702-010702.doi: 10.1088/1674-1056/22/1/010702

• GENERAL • 上一篇    下一篇

An in situ high-pressure X-ray diffraction experiment of hydroxyapophyllite

范大伟, 魏舒怡, 谢鸿森   

  1. Institute of Geochemistry of Laboratory for High Temperature & High Pressure Study of the Earth's Interior, Chinese Academy of Sciences, Guiyang 550002, China
  • 收稿日期:2012-05-21 修回日期:2012-06-11 出版日期:2012-12-01 发布日期:2012-12-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 41004035 and 90914008), the Western Doctor Special Fund of the West Light Foundation of the Chinese Academy of Sciences (2011, to Fan Da-Wei), and the Research Start-up Funds of the Excellent Doctoral Dissertation and Dean Award of Chinese Academy of Sciences (2010, to Fan Da-Wei).

An in situ high-pressure X-ray diffraction experiment of hydroxyapophyllite

Fan Da-Wei (范大伟), Wei Shu-Yi (魏舒怡), Xie Hong-Sen (谢鸿森)   

  1. Institute of Geochemistry of Laboratory for High Temperature & High Pressure Study of the Earth's Interior, Chinese Academy of Sciences, Guiyang 550002, China
  • Received:2012-05-21 Revised:2012-06-11 Online:2012-12-01 Published:2012-12-01
  • Contact: Fan Da-Wei E-mail:fandawei@vip.gyig.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 41004035 and 90914008), the Western Doctor Special Fund of the West Light Foundation of the Chinese Academy of Sciences (2011, to Fan Da-Wei), and the Research Start-up Funds of the Excellent Doctoral Dissertation and Dean Award of Chinese Academy of Sciences (2010, to Fan Da-Wei).

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摘要： The compression behavior of a natural hydroxyapophyllite is investigated up to about 10.01 GPa at 300 K using in situ angle-dispersive X-ray diffraction and a diamond anvil cell at High Pressure Experiment Station, Beijing Synchrotron Radiation Facility (BSRF). Over this pressure range, no phase change or disproportionation is observed. The isothermal equation of state is determined for the first time. The values of zero-pressure volume V0, isothermal bulk modulus K0, and K0' refined with a third-order Birch-Murnaghan equation of state are V0=1276.3±0.9 Å3, K0=71±3 GPa, and K0'=8±1. Furthermore, we confirm that the values of linear compressibility β along a and c directions of hydroxyapophyllite are elastically anisotropic.

关键词: hydroxyapophyllite, X-ray diffraction, equation of state, high pressure

Abstract: The compression behavior of a natural hydroxyapophyllite is investigated up to about 10.01 GPa at 300 K using in situ angle-dispersive X-ray diffraction and a diamond anvil cell at High Pressure Experiment Station, Beijing Synchrotron Radiation Facility (BSRF). Over this pressure range, no phase change or disproportionation is observed. The isothermal equation of state is determined for the first time. The values of zero-pressure volume V0, isothermal bulk modulus K0, and K0' refined with a third-order Birch-Murnaghan equation of state are V0=1276.3±0.9 Å3, K0=71±3 GPa, and K0'=8±1. Furthermore, we confirm that the values of linear compressibility β along a and c directions of hydroxyapophyllite are elastically anisotropic.

Key words: hydroxyapophyllite, X-ray diffraction, equation of state, high pressure

中图分类号:  (High-pressure apparatus; shock tubes; diamond anvil cells)

  • 07.35.+k
07.85.Qe (Synchrotron radiation instrumentation) 61.05.cp (X-ray diffraction)