Quenching of bcc-Fe from high to room temperature at high-pressure conditions: a molecular dynamics simulation

Details Quenching of bcc-Fe from high to room temperature at high-pressure conditions: a molecular dynamics simulation Quenching of bcc-Fe from high to room temperature at high-pressure conditions: a molecular dynamics simulation

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009njph...11i3039b&link_type=abstract

New Journal of Physics, Volume 11, Issue 9, pp. 093039 (2009).

Physics

3

Scientific paper

The new high-temperature (T), high-pressure (P), body-centered cubic (bcc) phase of iron has probably already been synthesized in recent diamond anvil cell (DAC) experiments (Mikhaylushkin et al 2007 Phys. Rev. Lett. 99 165505). These DAC experiments on iron revealed that the high-PT phase on quenching transforms into a mixture of close-packed phases. Our molecular dynamics simulation and structural analysis allow us to provide a probable interpretation of the experiments. We show that quenching of the high-PT bcc phase simulated with the embedded-atom model also leads to the formation of the mixture of close-packed phases. Therefore, the assumption of the stability of the high-PT bcc iron phase is consistent with experimental observation.

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