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

*Corresponding author for this work

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

Bibliographical note

Publisher Copyright:
© 2014, Springer International Publishing Switzerland.

Keywords

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

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