Rotation Rate Sensing via Magnetostatic Surface Wave Propagation on a Thick Yig Ring.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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This thesis presents a theoretical and experimental analysis of the potential use of magnetostatic surface waves to sense non-inertial rotation in a body-fixed reference frame. The analysis primarily focused on the use of high purity, single crystal yttrium-iron-garnet YIG as a propagation medium in a thick 0.13 centimeters ring geometry. The results of several experiments showed that despite the observation of satisfactory surface waves, the lower order wave numbers imposed by the thick ring geometry prevented the achieving of satisfactory rate sensing sensitivity. Additionally, non-uniform behavior as a function of lattice orientation with respect to the surface wave launch site had been observed. It is concluded that this is the result of anisotropic variations which are inherent in the yttrium-iron-garnet medium. Author
- Electricity and Magnetism