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Fe 2 O 3 , CoFe 2 O 4 , CuFe 2 O 4 , MnFe 2 O 4 and NiFe 2 O 4 films were prepared by a nonaqueous sol method. The sols were prepared by dissolving 10% by weight of the corresponding nitrates in ethylene glycol and heating the solution at 85°C under nitrogen. Fe 3 O 4 films were prepared by reducing the initial Fe 2 O 3 films in H 2 /Ar (10/90).