Evidence for a soft phonon mode and a new structure in rare-earth metals under pressure

Academic Article

Abstract

  • High-pressure x-ray diffraction experiments up to 30-40 GPa on lanthanum, praseodymium, and yttrium metals demonstrate that there is one more crystal structure in the regular rare-earth crystal-structure sequence. This structure results from a second-order phase transition in fcc phase and could be described by a zone-boundary soft phonon mode with q=(2a0)(12,12,12). © 1982 The American Physical Society.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Grosshans WA; Vohra YK; Holzapfel WB
  • Start Page

  • 1572
  • End Page

  • 1575
  • Volume

  • 49
  • Issue

  • 21