“…These experimental results can be qualitatively understood, neglecting the effect associated to the misfit strain (< 0.5%) between FeRh and MgO, in terms of the surface free energy [53], γ, associated to the system formed by the (001) MgO substrate surface [54], γ MgO subs = 1.1 Jm −2 , (001)Fe [55] and (001)Rh effect known as atom-peening [20]. This unique aspect of sputtering deposition technology has been experimentally [61] and theoretically [62,63] tested.…”