Ferromagnetic resonator

Details Ferromagnetic resonator Ferromagnetic resonator

1987-10-19

1989-07-11

LaRoche, Eugene R.

Wave transmission lines and networks

Resonators

Magnetic type

333204, H01P 700

Patent

active

048475793

ABSTRACT:
A ferromagnetic resonator is disclosed, in which perpendicular ferrimagnetic resonance of thin film YIG is utilized. The resonator comprises a ferrimagnetic YIG thin film and a microstrip line coupled to the YIG thin film operative in a bias magnetic field applied perpendicular to a major surface of the YIG thin film. The YIG thin film disk has a magnetization distribution of magnetostatic mode, and the microstrip line is designed to generate a high-frequency magnetic field distribution similar to the magnetization distribution of the uniform mode (1, 1).sub.1. In such arrangement, coupling between the high-frequency magnetic field and magnetization of high sprious mode is reduced.

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Adam, I. D. et al.; "Studies of FMR Linewidth in Thick YIG Films Grown by Liquid Phase Epitaxy"; AIP Conference Proc., No. 18, Part 2; 1973, pp. 1279-1283.
Simpson, J. T.; "Turnable Microwave filters Using YIG Grown by Liquid Phase Epitaxy" 4th European Microwave Conf., Montreux, Switzerland; Sep. 10-13, 1974; pp. 590-594.
IEEE Transactions on Microwave Theory and Techniques, May 1965, pp. 306-315.

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