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High pressure orthorhombic structure of CuInSe2

Research output: Contribution to journalArticle

  • T. Bovornratanaraks
  • V. Saengsuwan
  • K. Yoodee
  • M. I. McMahon
  • C. Hejny
  • D. Ruffolo
  • Malcolm McMahon

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Original languageEnglish
Article number355801
Pages (from-to)-
Number of pages4
JournalJournal of Physics: Condensed Matter
Issue number35
Publication statusPublished - 8 Sep 2010


The structural behaviour of CuInSe2 under high pressure has been studied up to 53 GPa using angle-dispersive x-ray powder diffraction techniques. The previously reported structural phase transition from its ambient pressure tetragonal structure to a high pressure phase with a NaCl-like cubic structure at 7.6 GPa has been confirmed. On further compression, another structural phase transition is observed at 39 GPa. A full structural study of this high pressure phase has been carried out and the high pressure structure has been identified as orthorhombic with space group Cmcm and lattice parameters a = 4.867(8) angstrom, b = 5.023(8) angstrom and c = 4.980(3) angstrom at 53.2(2) GPa. This phase transition behaviour is similar to those of analogous binary and trinary semiconductors, where the orthorhombic Cmcm structure can also be viewed as a distortion of the cubic NaCl-type structure.

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