Magnetic material and method for preparation thereof

Abstract

The invention provides a novel magnetic material having an epitaxially grown single crystalline film of spinel ferrite such as hematite and magnetite as a magnetic layer formed on a substrate. In place of a single crystal substrate of, e.g., magnesium oxide, on which an epitaxial spinel ferrite film is directly grown, the spinel ferrite film in the inventive magnetic material is epitaxially grown on a mica plate as the substrate with intervention of a buffer layer which is a single crystalline thin film of magnesium oxide epitaxially grown on the substrate surface. The thus prepared magnetic material can be used in magnetic devices by virtue of the inexpensiveness and high magnetic properties.

Dependencies are inferred from the claim text.