High pressure neutron powder diffraction study of Fe1−xCr x with and without hydrogen exposure

Oleg Rivin, Amir Broide, Silvie Maskova, Matthew S. Lucas, Amir Hen, Itzhak Orion, Shai Salhov, Michael Shandalov, Antonio Moreira Dos Santos, Jamie Molaison, Zhiqiang Chen, Itzhak Halevy

Research output: Contribution to journalArticlepeer-review

Abstract

The crystal structure of Fe1−xCrx(x = 0, 0.2 and 0.4) materials, with and without exposure to Hydrogen, is investigated using neutron powder diffraction under the applied external high-pressure. Above a certain applied pressure, PC, a structural phase transition, from cubic to hexagonal symmetry, is observed, in agreement with previous x-ray diffraction results. The PC values exhibit an increase with x increase. The possibility for an evolution of a magnetic structure with pressure, x and Hydrogen exposure, is examined. Finally, a broadening of the angular profile of the (200) reflection (cubic phase) is identified and reported.

Original languageEnglish
Pages (from-to)29-36
Number of pages8
JournalHyperfine Interactions
Volume231
Issue number1-3
DOIs
StatePublished - Apr 1 2015
Externally publishedYes

Keywords

  • Fe-Cr
  • High-Pressure
  • Hydrogen exposure
  • Neutron diffraction

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