Title

Renormalized Resonance Frequencies of a Ferrite Sphere Coupled to an LR Circuit: Comparison of Theory and Experiment:

Roles

Student author: Christopher Kerestes
Student author: Gregory Rydzak

Document Type

Article

Publication Date

2-2005

Department

Physics

Language

English

Publication Title

Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering

Abstract

We derive a formula for the AC susceptibility of a ferrite spherical resonator coupled to an LR circuit by formulating the problem in terms of a feedback mechanism. This technique allows us to find an analytical expression for the dependence of the shift in resonance frequency on the loop-crystal coupling strength, the circuit parameters, and the saturation magnetization of the ferrite. Finally, we compare these predictions to experimental results on YIG and Ga:YIG spheres. This coupling provides a simple way of tuning the uniform mode frequency relative to the spin-wave spectrum.

Comments

For more information on the published version, visit Wiley's Website.

Rydzak spelled incorrectly as Rydzag in publication.

DOI

10.1002/cmr.b.20026

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