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

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

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 2008

Keywords

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

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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.",

keywords = "C. High pressure, C. X-ray diffraction, D. Equations-of-state",

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

year = "2008",

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doi = "10.1016/j.jpcs.2008.03.020",

language = "English",

volume = "69",

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journal = "Journal of Physics and Chemistry of Solids",

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AU - Aksoy, Resul

AU - Selvi, Emre

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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