Ultrathin magnetite in Fe 3 O 4/MgO superlattices: Investigating the , 23 Mar 2017 , The electrical, crystallographic, and magnetic properties of ultrathin magnetite (Fe3O4) have been studied in detail, by employing superlattice structures of Fe3O4/MgFe2O4 and Fe3O4/MgO on a variety of substrat By careful analysis of their properties, the influence of substrate stoichiometry, Fe3O4 thin film ...