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Incommensurate-to-incommensurate phase transition in Eu metal at high pressures

DOI: 10.1103/PhysRevB.90.214105 DOI Help

Authors: R. J. Husband (University of Edinburgh) , I. Loa (University of Edinburgh) , K. A. Munro (University of Edinburgh) , E. E. Mcbride (The University of Edinburgh) , S. R. Evans (ESRF) , H. P Liermann (DESY) , M. I. Mcmahon (University of Edinburgh)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review B , VOL 90 (21) , PAGES 10-15

State: Published (Approved)
Published: December 2014

Abstract: High pressure x-ray powder-diffraction experiments were performed on europium metal up to about 70GPa. Above 38 GPa, europium transforms from the incommensurately modulated Eu-IV phase to a second phase with an incommensurately modulated crystal structure, Eu-V. This is a previously unseen incommensurately modulated to incommensurately modulated transition in the elements at high pressure. High-pressure high-temperature experiments were also performed up to 449 K in order to make an initial estimate of the positions of the phase boundaries of the incommensurate phases.

Subject Areas: Chemistry

Instruments: I15-Extreme Conditions

Other Facilities: ESRF; DESY

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