Ordering and self-diffusion in FePt alloy film

Details Ordering and self-diffusion in FePt alloy film Ordering and self-diffusion in FePt alloy film

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008njph...10e3031g&link_type=abstract

New Journal of Physics, Volume 10, Issue 5, pp. 053031 (2008).

Physics

3

Scientific paper

Neutrons have different scattering cross-sections for the isotopes of an element. Also, they interact with the un-paired electrons in a magnetic sample due to their magnetic moment. Neutron reflectivity or reflectometry is a technique which measures the depth profile of a sample. Using polarized neutrons, both self-diffusion and magnetism can be probed in a unique way. In the present work, polarized neutron reflectometry measurements were performed in [FePt/57FePt] multilayers across the structural ordering temperature of this sample. It was found that the structural ordering in this system is concurrent with a sudden increase in Fe diffusivity and a sudden drop in the value of the magnetic moment.

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