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US 2019/0316253 A1Published application
Forming iron nitride hard magnetic materials using chemical vapor deposition or liquid phase epitaxy
AssigneeRegents of the University of Minnesota
InventorsJian-Ping WANG, YanFeng JIANG
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Abstract
The disclosure describes hard magnetic materials including α″-Fe16N2 and techniques for forming hard magnetic materials including α″-Fe16N2 using chemical vapor deposition or liquid phase epitaxy.
Claims29
A method comprising:
- heating an iron source to form a vapor comprising an iron-containing compound;
- depositing iron from the vapor comprising the iron-containing compound and nitrogen from a vapor comprising a nitrogen-containing compound on a substrate to form a layer comprising iron and nitrogen;
- and
- annealing the layer comprising iron and nitrogen to form at least some crystals comprising α″-Fe16N2.
1 more element
A method comprising:
- submerging a substrate in a coating solution comprising a nitrogen-containing solvent and an iron source, wherein the coating solution is saturated with the iron source at a first temperature above a liquidus temperature of an iron-nitrogen mixture to be deposited from the coating solution;
- cooling the coating solution to a second temperature to form a supersaturated coating solution, wherein the second temperature is below the liquidus temperature of the iron-nitrogen mixture;
- keeping the substrate in the supersaturated coating solution to allow a coating comprising iron and nitrogen to form on the substrate;
- and
- annealing the coating comprising iron and nitrogen to form at least some crystals comprising α″-Fe16N2.
2 more elements
Dependencies are inferred from the claim text.