Influence of magnetoelastic effects on lattice vibrations in the ferromagnetic invar alloy Fe0.65Ni0.35 |
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| Authors: | Y. Endoh Y. Noda Y. Ishikawa |
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| Affiliation: | Department of Physics, Tohoku University, Sendai, 980, Japan |
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| Abstract: | Neutron scattering measurements have been made of phonons in a Fe65Ni35 crystal at several temperatures. Marked softening of the [110] acoustic shear modes and a dip in the dispersion relation are found at low temperatures. Above the magnetic ordering temperature Tc, the frequency shift is removed completely, which suggests phonon perturbation by magnetoelastic coupling. |
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