Numéro
J. Phys. Colloques
Volume 42, Numéro C6, Décembre 1981
International Conference on Phonon Physics
Page(s) C6-398 - C6-400
DOI https://doi.org/10.1051/jphyscol:19816116
International Conference on Phonon Physics

J. Phys. Colloques 42 (1981) C6-398-C6-400

DOI: 10.1051/jphyscol:19816116

HIGH TEMPERATURE PHONONS IN IRON

A.M. Vallêra

Fac. de Ciências, Lisboa, and LNETI, Sacavem, Portugal.


Abstract
The phonon frequencies of Fe + 5 at % Si were extensively measured at room temperature, 933K, 1147K, and 1423K using neutron inelastic scattering. The most interesting features are the frequency shifts of obvious magnetic origin, with large gradients at the Curie temperature. Their interpretation in terms of magnetic contributions is discussed, and preliminary magnetic force constants are given.