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US 4,624,901 AGranted
Intermediary layers for epitaxial hexagonal ferrite films
AssigneeRockwell International Corporation
InventorHoward L. Glass
Life of this patent
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Abstract
A single crystal film of a hexagonal ferrite is deposited on a nonmagnetic, single crystal substrate with a film of a second ferrite material interposed between the substrate and the hexagonal ferrite film. In a preferred embodiment, the substrate is of nonmagnetic spinel and the second ferrite material is a spinel ferrite.
Claims14
A composition, comprising:
- a single crystal substrate of a nonmagnetic material lattice matched to a selected hexagonal ferrite;
- a single crystal film of said selected hexagonal ferrite disposed on said substrate;
- and
- a single crystal film of a second ferrite interposed between said substrate and said single crystal film of hexagonal ferrite, wherein said second ferrite is not a hexagonal ferrite.
1 more element
A method for preparing single crystal films of a selected hexagonal ferrite, comprising:
- providing a single crystal nonmagnetic substrate lattice matched to said selected hexagonal ferrite;
- depositing a single crystal film of a second ferrite on said substrate surface;
- and
- depositing a single crystal film of said selected hexagonal ferrite on said single crystal film of a second ferrite, wherein said second ferrite is not a hexagonal ferrite.
1 more element
Dependencies are inferred from the claim text.