Abstract
Making use of the Hamiltonian for linear magneto-elastic coupling which has been proposed by Callen and Callen, expressions are deduced for changes in the velocity of acoustic waves in a terbium crystal, due to ferromagnetic ordering and the application of an external magnetic field. These calculations agree semi-quantitatively with the results of experimental measurements. The author has examined the extent to which this simple picture is applicable to explain the magnon-phonon interactions in terbium, which have been observed at finite wave vectors by inelastic neutron scattering
| Original language | English |
|---|---|
| Journal | International Journal of Magnetism |
| Volume | 1 |
| Issue number | 3 |
| Pages (from-to) | 271-275 |
| ISSN | 0020-7365 |
| Publication status | Published - 1971 |