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Revised prediction of B1 to B2 phase transition pressures in YbN, YbP and YbAs

  • Björn Winkler and Victor Milman
Published/Copyright: September 25, 2009

Abstract

Quantum mechanical calculations based on density functional theory and a generalized gradient approx imation have been used to study the pressure-induced B1 to B2 structural phase transition in YbN, YbP and YbAs. The phase transitions are predicted to occur at 137 GPa in YbN, at 25 GPa in YbP, and at 20 GPa in YbAs. These values are significantly lower than those predicted by empirical poten tial model calculations. Bulk moduli are predicted to be 136, 70 and 63 GPa for YbN, YbP and YbAs, respectively.

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Published Online: 2009-9-25
Published in Print: 2005-8-1

© by Oldenbourg Wissenschaftsverlag, München

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