Magnetostatic wave ring resonator with a rotating thin film

A magnetostatic-wave ring resonator with a rotating thin film has been constructed, and its use as a rotation rate sensor has been investigated. Measurements were made between 1.0 and 1.5 GHz. Large orientation-dependent phase and amplitude variations were observed that masked velocity-dependent eff...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1988-11, Vol.24 (6), p.2805-2807
Main Authors: Saunders, A.E., Stancil, D.D.
Format: Article
Language:English
Subjects:
Magnetic anisotropy
Magnetic devices
Magnetic sensors
Magnetostatic waves
Optical ring resonators
Perpendicular magnetic anisotropy
Sensor phenomena and characterization
Temperature sensors
Thin film sensors
Transistors
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Summary:A magnetostatic-wave ring resonator with a rotating thin film has been constructed, and its use as a rotation rate sensor has been investigated. Measurements were made between 1.0 and 1.5 GHz. Large orientation-dependent phase and amplitude variations were observed that masked velocity-dependent effects. The variations are attributed to magnetocrystalline anisotropy and preclude the use of the device as a rotation rate sensor. However, the phase shift through the device was found to vary with temperature at a rate of -9.8 degrees/ degrees C, suggesting that it could be used as a noncontacting temperature sensor for rotating bodies.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.92251