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arXiv · 1701.02467

The giant effect of magnetic ordering on a sound velocity in a sigma-Fe55Cr45 alloy

S. M. Dubiel·A. I. Chumakov
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Abstract

We studied atomic dynamics of sigma-Fe(100-x)Cr(x) (x=45 and 49.5) alloys using nuclear inelastic scattering of synchrotron radiation. For the sigma-Fe55Cr45 alloy, the derived reduced iron-partial density of phonon states reveal a huge difference in the low-energy region between magnetic and paramagnetic states. The latter implies a ca.36% increase of the sound velocity in the magnetic phase, which testifies to a magnetically-induced hardening of the lattice.

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S. M. Dubiel, A. I. Chumakov. 2017-01-10. The giant effect of magnetic ordering on a sound velocity in a sigma-Fe55Cr45 alloy. https://doi.org/10.1209/0295-5075/117/56001

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