Magnetic laminated structure and method of making
AssigneeGeneral Electric Company
InventorsLuana Iorio, Pazhayannur Subramanian
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Abstract
An article comprising a multilayered structure comprising a series of magnetic layers is provided. The magnetic layers comprise a magnetic material, and an insulating layer is disposed between successive magnetic layers. Each magnetic layer has a thickness of at least about 2 micrometers and magnetic material has an average grain size less than 200 nm. Also provided is a method for making the article.
Claims41
An article comprising:
- a multilayered structure comprising a series of magnetic layers, said magnetic layers comprising a magnetic material, wherein an insulating layer is disposed between successive magnetic layers, wherein each magnetic layer has a thickness of at least about 2 micrometers, and wherein said magnetic material has an average grain size not more than about 200 nm.
An article comprising:
- a multilayered structure comprising a series of magnetic layers, wherein said magnetic layers comprise a soft magnetic material comprising Fe and Co having an average grain size of less than about 100 nm, and wherein said magnetic layers have a thickness in the range from about 5 micrometer to 350 micrometers;
- wherein an insulating layer comprising an oxide is disposed between successive magnetic layers.
A method for making an article, said method comprising the steps of
- (a) providing a substrate;
- and
- (b) depositing a series of magnetic layers on said substrate, said magnetic layers comprising a magnetic material, wherein each magnetic layer has a thickness of at least about 2 micrometers, and wherein said magnetic material has an average grain size not more than 200 nm;
- and
- (c) disposing an insulating layer between successive magnetic layers.
A method for making an article, said method comprising the steps of
- (a) providing a substrate at a temperature below about 600° C.;
- and
- (b) electron beam physical vapor depositing a series of magnetic layers on said substrate, said magnetic layers comprising a magnetic material, wherein each magnetic layer has a thickness of at least about 2 micrometers, and wherein said magnetic material has an average grain size not more than 200 nm;
- and
- (c) disposing an insulating layer between successive magnetic layers.
A method for making an article, said method comprises the steps of
- (a) providing a substrate at a temperature below about 600° C.;
- (b) electron beam physical vapor depositing a series of magnetic layers, said magnetic layers comprising a magnetic material, wherein each magnetic layer has a thickness of at least about 2 micrometers, and wherein said magnetic material has an average grain size not more than 200 nm on said substrate;
- (c) co-depositing nano dispersoids with said magnetic material;
- and
- (d) disposing an insulating layer between successive magnetic layers.
Dependencies are inferred from the claim text.