Structural study of FeP2 at high pressure

X. Wu, M. Kanzaki, S. Qin, G. Steinle-Neumann, L. Dubrovinsky

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Abstract

The structural stability of marcasite-type FeP2 at high pressure has been studied by X-ray diffraction, Raman spectroscopy, and theoretical calculations. Experimental results show that no phase transitions happen up to 28GPa at room temperature. The shortest axis of the marcasite-type FeP 2 cell, the c-axis, is the most compressible, due to the softening of edge-shared octahedra along the c-axis. The linear pressure coefficients and Gruneisen parameters of four Raman modes are determined. Theoretical calculations further support the experimental results and indicate that FeP2 is still a semiconductor up to 35GPa.

Original languageEnglish
Pages (from-to)235-244
Number of pages10
JournalHigh Pressure Research
Volume29
Issue number2
DOIs
Publication statusPublished - Jun 1 2009

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Keywords

  • High pressure
  • Marcasite-type structure
  • Theoretical calculations

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Wu, X., Kanzaki, M., Qin, S., Steinle-Neumann, G., & Dubrovinsky, L. (2009). Structural study of FeP2 at high pressure. High Pressure Research, 29(2), 235-244. https://doi.org/10.1080/08957950802597221