Figure 2. Measured magnetoelastic and domain wall energies.

(a) The magnetic free energy coefficient induced by the strain for the epitaxial thin Fe₈₁Ga₁₉ films obtained from electrical transport (black circles) and FMR measurements (blue squares). For comparison the curves deduced from the numbers reported for bulk single crystals (solid red line)¹⁵ and thin FeGaB (dashed blue line) films¹⁹ are also shown. (b) The domain wall pinning energy extracted from fitting to the electrical transport measurements.