Resonances in large ferrimagnetic YIG samples – Electrodynamic analysis

Electrodynamic study of YIG filters and resonators

Numerical solutions of coupled Maxwell and Landau-Lifshitz-Gilbert equations for a magnetized yttrium iron garnet (YIG) sphere acting as a one-stage filter are presented. The filter is analysed using finite-difference time-domain technique. Contrary to the state of the art, the study shows that the maximum electromagnetic power transmission through the YIG filter occurs at the frequency of the ...

Activation Analysis of Large Samples

Femtosecond laser excitation of spin resonances in amorphous ferrimagnetic Gd(1-x)Co(x) alloys.

Using 100 fs laser pulses, a high-frequency exchange and a low-frequency ferromagnetic resonance mode have been excited and detected in an amorphous Gd(1-x)Co(x) (78≤x≤85) ferrimagnetic thin film, on both sides of its angular momentum compensation composition. The excitation efficiency of these modes strongly depends on the amount of laser-induced heating. Ways of selectively and efficiently ex...

Electrodynamic Analysis of Antennas in Multipath Conditions

A Theoretical Study on the Rank of the Integral Operators for Large-Ââ•’Scale Electrodynamic Analysis

We theoretically prove that the minimal rank of the interaction between two separated geometry blocks in an integral-equation based analysis of general threedimensional objects, for a prescribed error bound, scales linearly with the electric size of the block diameter. We thus prove the existence of the error-bounded lowrank representation of both surface and volume based integral operators for...