Ferrite-dielectric resonators made of uniaxial ferrites in before-the-resonance region

Nikolay N. Movchan; Igor V. Zavislyak

doi:10.3103/S0735272713120017

Authors

Nikolay N. Movchan Taras Shevchenko National University of Kyiv, Ukraine https://orcid.org/0000-0002-1303-9946
Igor V. Zavislyak Taras Shevchenko National University of Kyiv, Ukraine https://orcid.org/0000-0003-0161-4197

DOI:

https://doi.org/10.3103/S0735272713120017

Keywords:

ferrite resonator, magneto-dynamic oscillations, mode splitting, hysteresis, barium hexaferrite

Abstract

The effect of splitting resonant frequencies of azimuthally heterogeneous HE_±11δ oscillations of a disc ferrite-dielectric resonator made of barium hexaferrite is studied in external magnetic field on frequencies below 47 GHz. Applicability of the developed earlier analytical theory of electromagnetic oscillations in magneto-gyrotropic resonators to mode identification and calculation of field dependencies of magnetic oscillations’ resonant frequencies in the before-the-resonance region is demonstrated. Hysteresis effect is discovered in the field dependencies of magneto-dynamic oscillations’ eigenfrequencies in resonators made of uniaxial ferrite. The influence of dielectric layer between the resonator and the metal screen on frequency splitting of HE_±11δ oscillations is studied. The possibility of using ferrite-dielectric resonators in the self-magnetization mode is discussed.

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