Phase transformations and equation of state of praseodymium metal to 103 GPa

Academic Article


  • Pressure-induced structural phase transformations in a trivalent rare-earth metal praseodymium (Pr) were studied at room temperature in a diamond anvil cell to 103 GPa by energy dispersive x-ray diffraction using a synchrotron source. Our x-ray diffraction studies document the following crystal structure sequence: (Formula presented)uranium with increasing pressure. We measure a 16.7% volume collapse at the transition to the α-uranium phase at 20 GPa. The high-pressure α-uranium phase in Pr was found to be stable to the highest pressure of 103 GPa, which corresponds to a volume compression (Formula presented). © 2000 The American Physical Society.
  • Authors

    Digital Object Identifier (doi)

    Author List

  • Chesnut GN; Vohra YK
  • Start Page

  • 2965
  • End Page

  • 2968
  • Volume

  • 62
  • Issue

  • 5