α-uranium phase in compressed neodymium metal

Academic Article

Abstract

  • The light rare-earth metal, neodymium, has been studied up to 155 GPa in a diamond-anvil cell using energy dispersive x-ray diffraction with a synchrotron source. The pressures were calibrated using copper as an internal x-ray pressure standard. A phase transformation from a monoclinic phase (Formula presented) to an orthorhombic α-U phase (Formula presented) was observed at 113±6 GPa without any observable volume collapse. The observation of α-U phase in Nd and, previously, in cerium and praseodymium clearly establishes this phase in light rare-earth metals. Our equation of state measurements suggest that delocalization of the f shell in Nd occurs without any volume collapse unlike Ce and Pr. © 2000 The American Physical Society.
  • Authors

    Digital Object Identifier (doi)

    Author List

  • Chesnut GN; Vohra YK
  • Start Page

  • R3768
  • End Page

  • R3771
  • Volume

  • 61
  • Issue

  • 6