High Pressure X-Ray Diffraction of SrF<SUB>2</SUB>

TANG Ling-Yun; LIU Jing; XIAO Wan-Sheng

Chinese Physics C> 2005, Vol. 29> Issue(S1) : 109-111

High Pressure X-Ray Diffraction of SrF₂

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China2 Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China

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Abstract：
The high pressure diffraction study of SrF₂ was performed using synchrotron radiation energy dispersive X-rays diffraction (EDXD). Liquid Ar was used as pressure transmitting medium in the experiment in order to produce hydrostatic pressure. The highest pressure was up to 44.2GPa. A phase transition of SrF₂, from cubic to orthorhombic，occurred around 11.2GPa. By fitting the pressure-volume data, the bulk modulus of the cubic phase of SrF₂ is 70.0(5.0)GPa, and the bulk modulus of the orthorhombic of SrF₂ is 198.3(15.2)GPa. SrF₂ was returned to the cubic phase by decreasing pressure.

References

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TANG Ling-Yun, LIU Jing and XIAO Wan-Sheng. High Pressure X-Ray Diffraction of SrF₂[J]. Chinese Physics C, 2005, 29(S1): 109-111.

TANG Ling-Yun, LIU Jing and XIAO Wan-Sheng. High Pressure X-Ray Diffraction of SrF₂[J]. Chinese Physics C, 2005, 29(S1): 109-111. shu

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Received: 2005-10-31
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

High Pressure X-Ray Diffraction of SrF₂

Corresponding author: LIU Jing,

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China2 Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China

Received Date: 2005-10-31
Accepted Date: 1900-01-01
Available Online: 2005-01-02

Abstract: The high pressure diffraction study of SrF₂ was performed using synchrotron radiation energy dispersive X-rays diffraction (EDXD). Liquid Ar was used as pressure transmitting medium in the experiment in order to produce hydrostatic pressure. The highest pressure was up to 44.2GPa. A phase transition of SrF₂, from cubic to orthorhombic，occurred around 11.2GPa. By fitting the pressure-volume data, the bulk modulus of the cubic phase of SrF₂ is 70.0(5.0)GPa, and the bulk modulus of the orthorhombic of SrF₂ is 198.3(15.2)GPa. SrF₂ was returned to the cubic phase by decreasing pressure.