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US 11,906,605 B1Granted
Apparatus, systems, and methods for measurement using magneto-optical Kerr effect
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsNicholas J. Jones, Emily L. Guzas, Matthew T. Roberts, Wayne C. Tucker
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Abstract
The magneto-optical Kerr effect (MOKE) is used to capture variations in magnetic permeability and magnetization to determine the presence of sensitization. MOKE-magnetometry-based systems and apparatus may be used to provide in-field magnetic measurements, and may be particularly useful in methods for assessing changes in composition, crystal structure, and grain size in magnetic materials.
Claims7
Apparatus for measuring magnetic permeability and magnetization in a magnetic alloy, comprising:
- a magneto-optical Kerr effect (MOKE) microscope provided within a metallic housing having an aperture therein;
- attachment means for removably attaching the metallic housing to a surface of the magnetic alloy;
- and
- a magnetic field-producing apparatus provided with arms for conducting the magnetic field to a surface of the magnetic alloy.
1 more element
Dependencies are inferred from the claim text.