X-ray diffraction study of molybdenum diselenide to 35.9 GPa

Resul Aksoy; Emre Selvi; Yanzhang Ma

doi:10.1016/j.jpcs.2008.03.020

X-ray diffraction study of molybdenum diselenide to 35.9 GPa

Resul Aksoy, Emre Selvi, Yanzhang Ma

Mechanical Engineering

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Abstract

In situ high-pressure angle dispersive synchrotron X-ray diffraction studies of molybdenum diselenide (MoSe₂) were carried out in a diamond-anvil cell to 35.9 GPa. No evidence of a phase transformation was observed in the pressure range. By fitting the pressure-volume data to the third-order Birch-Murnaghan equation of state, the bulk modulus, K_0T, was determined to be 45.7±0.3 GPa with its pressure derivative, K′_0T, being 11.6±0.1. It was found that the c-axis decreased linearly with pressure at a slope of -0.1593 when pressures were lower than 10 GPa. It showed different linear decrease with the slope of a -0.0236 at pressures higher than 10 GPa.

Original language	English
Pages (from-to)	2138-2140
Number of pages	3
Journal	Journal of Physics and Chemistry of Solids
Volume	69
Issue number	9
DOIs	https://doi.org/10.1016/j.jpcs.2008.03.020
State	Published - Sep 1 2008

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Keywords

C. High pressure
C. X-ray diffraction
D. Equations-of-state

Cite this

Aksoy, R., Selvi, E., & Ma, Y. (2008). X-ray diffraction study of molybdenum diselenide to 35.9 GPa. Journal of Physics and Chemistry of Solids, 69(9), 2138-2140. https://doi.org/10.1016/j.jpcs.2008.03.020

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title = "X-ray diffraction study of molybdenum diselenide to 35.9 GPa",

abstract = "In situ high-pressure angle dispersive synchrotron X-ray diffraction studies of molybdenum diselenide (MoSe2) were carried out in a diamond-anvil cell to 35.9 GPa. No evidence of a phase transformation was observed in the pressure range. By fitting the pressure-volume data to the third-order Birch-Murnaghan equation of state, the bulk modulus, K0T, was determined to be 45.7±0.3 GPa with its pressure derivative, K′0T, being 11.6±0.1. It was found that the c-axis decreased linearly with pressure at a slope of -0.1593 when pressures were lower than 10 GPa. It showed different linear decrease with the slope of a -0.0236 at pressures higher than 10 GPa.",

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author = "Resul Aksoy and Emre Selvi and Yanzhang Ma",

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AU - Ma, Yanzhang

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N2 - In situ high-pressure angle dispersive synchrotron X-ray diffraction studies of molybdenum diselenide (MoSe2) were carried out in a diamond-anvil cell to 35.9 GPa. No evidence of a phase transformation was observed in the pressure range. By fitting the pressure-volume data to the third-order Birch-Murnaghan equation of state, the bulk modulus, K0T, was determined to be 45.7±0.3 GPa with its pressure derivative, K′0T, being 11.6±0.1. It was found that the c-axis decreased linearly with pressure at a slope of -0.1593 when pressures were lower than 10 GPa. It showed different linear decrease with the slope of a -0.0236 at pressures higher than 10 GPa.

AB - In situ high-pressure angle dispersive synchrotron X-ray diffraction studies of molybdenum diselenide (MoSe2) were carried out in a diamond-anvil cell to 35.9 GPa. No evidence of a phase transformation was observed in the pressure range. By fitting the pressure-volume data to the third-order Birch-Murnaghan equation of state, the bulk modulus, K0T, was determined to be 45.7±0.3 GPa with its pressure derivative, K′0T, being 11.6±0.1. It was found that the c-axis decreased linearly with pressure at a slope of -0.1593 when pressures were lower than 10 GPa. It showed different linear decrease with the slope of a -0.0236 at pressures higher than 10 GPa.

KW - C. High pressure

KW - C. X-ray diffraction

KW - D. Equations-of-state

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10.1016/j.jpcs.2008.03.020

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