Mechanism of Wave Propagation in Ferromagnetic Resonance at Magnetic-Dielectric Layered Composite Medium with Matrix Representation.

Autor: Rizal, Fauzul, Hidayat, Arif
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Zdroj: AIP Conference Proceedings; 2020, Vol. 2234 Issue 1, p040022-1-040022-6, 6p
Abstrakt: Ferromagnetic resonance has gained much attention recently since the super-lattice of magnetic could be reproduced well by the structure of the thin film that inserted into the dielectric layers. The magnetic properties of many magnetic layers structure are different from a single magnetic layer due to the boundary conditions from exchange interaction. We investigated the nature of electromagnetic waves in the ferromagnetic resonance phenomenon of the composite medium constructed by alternately magnetic-dielectric layers. Here, we explore electromagnetics nature by using a transfer matrix associated with the electromagnetic field at two sides of a single magnetic layer surfaces. The transfer function matrix for the layers composite medium is a diagonal matrix with the diagonal elements that are the transfer function matrix from each layer that constructing the structure. Even with exchange interactions between the two sides of the layer, it is still possible to express microwave field behavior between the two surfaces with a matrix. This kind of simplification makes it possible to calculate the ratio between an electric field and its magnetic field (which is nothing but the surface impedance) of a layer structure and then for many layers of construction. The eminence of this transfer matrix approach is that it is more potent for operating an equation system that exceeds seven linear equations. Therefore, reducing the time to solve the sets of surface electromagnetic equations and provide convenience to study the wave’s propagation at a magnetic medium. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index