Magnetoelastic magnetometer
First Claim
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1. A magnetoelastic magnetometer, comprising:
- a magnetoelastic member for placement in a magnetic field;
electromechanical means, proximate to said member, for measuring a change in the modulus of elasticity of said magnetoelastic member caused by the magnetic field; and
means responsive to said means for measuring for determining the magnitude of the magnetic field.
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Abstract
A magnetoelastic magnetometer having a magnetoelastic member for placement in a magnetic field, An effect on the stiffness of the magnetoelastic member caused by the magnetic field is measured, and magnitude of the field is determined in response.
69 Citations
23 Claims
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1. A magnetoelastic magnetometer, comprising:
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a magnetoelastic member for placement in a magnetic field; electromechanical means, proximate to said member, for measuring a change in the modulus of elasticity of said magnetoelastic member caused by the magnetic field; and means responsive to said means for measuring for determining the magnitude of the magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A magnetoelastic magnetometer, comprising:
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a magnetoelastic cantilever member for placement in a magnetic field; means for vibrating said magnetoelastic cantilever member at its resonant frequency; a second cantilever member; means for measuring the distance between said magnetoelastic cantilever member and said following cantilever member; means for vibrating said following cantilever member to maintain a constant distance between said magnetoelastic cantilever member and said following cantilever member and to maintain a constant phase relationship between the cantilever vibrations; and means responsive to the resonant frequency of said magnetoelastic cantilever member, for resolving magnitude of the magnetic field.
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23. A magnetoelastic magnetometer comprising:
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a magnetoelastic cantilever member for placement in a magnetic field; means for vibrating said magnetoelastic cantilever member at its resonant frequency; and means responsive to the resonant frequency of the magnetoelastic cantilever member for resolving the magnitude of the magnetic field.
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Specification