High-pressure X-ray diffraction study of tungsten diselenide

Emre Selvi; Resul Aksoy; Russell Knudson; Yanzhang Ma

doi:10.1016/j.jpcs.2008.04.003

High-pressure X-ray diffraction study of tungsten diselenide

Emre Selvi, Resul Aksoy, Russell Knudson, Yanzhang Ma

Mechanical Engineering

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

16 Scopus citations

Abstract

Synchrotron X-ray diffraction was used in conjunction with a diamond anvil cell to investigate the properties of a tungsten diselenide (WSe₂) sample to 35.8 GPa at room temperature. By fitting the pressure-volume data to the third-order Birch-Murnaghan equation of state, the bulk modulus, K_0T, of WSe₂ was determined to be 72±1 GPa with its pressure derivative, K_{0 T}^′, being 4.1±0.1. It was also found that the c-direction of the hexagonal structure is significantly more compressible than the a-direction. No phase transformation was clearly observed in the pressure range of our measurements.

Original language	English
Pages (from-to)	2311-2314
Number of pages	4
Journal	Journal of Physics and Chemistry of Solids
Volume	69
Issue number	9
DOIs	https://doi.org/10.1016/j.jpcs.2008.04.003
State	Published - Sep 2008

Keywords

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

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10.1016/j.jpcs.2008.04.003

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title = "High-pressure X-ray diffraction study of tungsten diselenide",

abstract = "Synchrotron X-ray diffraction was used in conjunction with a diamond anvil cell to investigate the properties of a tungsten diselenide (WSe2) sample to 35.8 GPa at room temperature. By fitting the pressure-volume data to the third-order Birch-Murnaghan equation of state, the bulk modulus, K0T, of WSe2 was determined to be 72±1 GPa with its pressure derivative, K0 T′, being 4.1±0.1. It was also found that the c-direction of the hexagonal structure is significantly more compressible than the a-direction. No phase transformation was clearly observed in the pressure range of our measurements.",

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

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

note = "Funding Information: The authors thank Drs. J. Hu and Q. Guo for their technical support with the X-ray diffraction measurements at Brookhaven National Laboratory. This research was supported by DOE (Agreement no. DE-FC03-03NA00144) and NSF (Grant no. DMR-0619215).",

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doi = "10.1016/j.jpcs.2008.04.003",

language = "English",

volume = "69",

pages = "2311--2314",

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

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T1 - High-pressure X-ray diffraction study of tungsten diselenide

AU - Selvi, Emre

AU - Aksoy, Resul

AU - Knudson, Russell

AU - Ma, Yanzhang

N1 - Funding Information: The authors thank Drs. J. Hu and Q. Guo for their technical support with the X-ray diffraction measurements at Brookhaven National Laboratory. This research was supported by DOE (Agreement no. DE-FC03-03NA00144) and NSF (Grant no. DMR-0619215).

PY - 2008/9

Y1 - 2008/9

N2 - Synchrotron X-ray diffraction was used in conjunction with a diamond anvil cell to investigate the properties of a tungsten diselenide (WSe2) sample to 35.8 GPa at room temperature. By fitting the pressure-volume data to the third-order Birch-Murnaghan equation of state, the bulk modulus, K0T, of WSe2 was determined to be 72±1 GPa with its pressure derivative, K0 T′, being 4.1±0.1. It was also found that the c-direction of the hexagonal structure is significantly more compressible than the a-direction. No phase transformation was clearly observed in the pressure range of our measurements.

AB - Synchrotron X-ray diffraction was used in conjunction with a diamond anvil cell to investigate the properties of a tungsten diselenide (WSe2) sample to 35.8 GPa at room temperature. By fitting the pressure-volume data to the third-order Birch-Murnaghan equation of state, the bulk modulus, K0T, of WSe2 was determined to be 72±1 GPa with its pressure derivative, K0 T′, being 4.1±0.1. It was also found that the c-direction of the hexagonal structure is significantly more compressible than the a-direction. No phase transformation was clearly observed in the pressure range of our measurements.

KW - C. High pressure

KW - C. X-ray diffraction

KW - D. Equation-of-state

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U2 - 10.1016/j.jpcs.2008.04.003

DO - 10.1016/j.jpcs.2008.04.003

M3 - Article

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SN - 0022-3697

VL - 69

SP - 2311

EP - 2314

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 9

ER -

High-pressure X-ray diffraction study of tungsten diselenide

Abstract

Keywords

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