The Morin phase transition in haematite ($\alpha$-Fe2O3) II. Free spin waves
- 1 September 1969
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 2 (9), 1614-1629
- https://doi.org/10.1088/0022-3719/2/9/311
Abstract
The group-theoretic technique described in an earlier paper is used to calculate the free spin wave energies for both magnetic phases of haematite. It is shown that the optic modes may have unusually low energy in α-Fe2O3, and that molecular field theory gives correct results for magnetic resonance.Keywords
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