Thin films of the metastable and elusive-Fe 2 O 3 have been epitaxially stabilized on SrTiO 3 ͑111͒ substrates. The-Fe 2 O 3 films present a ͑001͒ orientation perpendicular to the substrate and three in-plane domains measuring a few nanometers and showing atomically sharp interfaces. We argue that this domain structure, rather than the epitaxial-strain, plays an essential role in stabilizing the-Fe 2 O 3 by minimizing the energy of ͑100͒ surfaces. The-Fe 2 O 3 films show a large in-plane coercivity ϳ8 kOe which combined with the magnetoelectric character claimed for this oxide may lead to novel applications in spintronics.

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The antiferromagnetic to ferromagnetic transition occurring above room temperature in FeRh is attracting interest for applications in spintronics, with perspectives for robust and untraceable data storage. Here, we show that FeRh films can be grown on a flexible metallic substrate (tape shaped), coated with a textured rock-salt MgO layer, suitable for large scale applications. The FeRh tape displays a sharp antiferromagnetic to ferromagnetic transition

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