Abstract
Epitaxial iron oxide films were grown on MgO(001) substrate by using molecular beam epitaxy. The growth modes, magnetism and transport properties of the films were strongly dependent on the oxygen pressure during film growth. Fe3O4 film was grown in oxygen poor environment (2.3×10−7Torr), while γ-Fe2O3 film was grown in 8.2×10−6Torr oxygen. The average roughness decreases from 1.02 to 0.26nm with oxygen pressure during growth.
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