High-pressure X-ray diffraction study of tungsten diselenide

Emre Selvi, Resul Aksoy, Russell Knudson, Yanzhang Ma

Research output: Contribution to journalArticle

11 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, 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.

Original languageEnglish
Pages (from-to)2311-2314
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Volume69
Issue number9
DOIs
StatePublished - Sep 2008

Keywords

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

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