Abstract
The properties of domain walls in ferromagnets that are elastically soft are considered. The wall energy is comprised of exchange, anisotropy, elastic, and magnetoelastic terms. Results are given for the energy and profile of a model crystal with [100] easy axes and large tetragonal magnetostriction. The wall energy is calculated for Neel walls propagating in [010] and [110] directions. It is shown that the [110] wall has lower energy for all values of magnetostriction. It is argued that these walls should be observable in crystals with magnetoelastic energy large enough to overcome demagnetizing effects. Candidate materials include Fe1−xGax alloys, rare earth–zinc compounds, and certain martensitic materials in their cubic phases.
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