Magnetostatic wave ring resonator with a rotating thin film

Author

Saunders, Andrea E. ; Stancil, Daniel D.

Author_Institution

Magnetics Technol. Center, Carnegie-Mellon Univ., Pittsburgh, PA, USA

Volume

24

Issue

6

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

2805

Lastpage

2807

Abstract

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/°C, suggesting that it could be used as a noncontacting temperature sensor for rotating bodies

Keywords

angular velocity measurement; garnets; magnetic thin film devices; magnetostatic wave devices; nonelectric sensing devices; resonators; solid-state microwave devices; temperature measurement; yttrium compounds; 1 to 1.5 GHz; YFe5O12; YIG film; amplitude variations; magnetocrystalline anisotropy; magnetostatic-wave ring resonator; noncontacting temperature sensor; phase shift; phase variations; rotating thin film; rotation rate sensor; Magnetic anisotropy; Magnetic devices; Magnetic sensors; Magnetostatic waves; Optical ring resonators; Perpendicular magnetic anisotropy; Sensor phenomena and characterization; Temperature sensors; Thin film sensors; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92251

Filename

92251