Publikace na Matematicko-fyzikální fakulta |
2015
Abstrakt
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, P-C, a structural phase transition, from cubic to hexagonal symmetry, is observed, in agreement with previous x-ray diffraction results.
The P-C 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.