{"title":"Electromagnetic Waves in a Tangentially Magnetized One-Side Metallized Bigyrotropic Layer (Example of Calculating the Spin Wave Characteristics)","authors":"E. H. Lock, S. V. Gerus","doi":"10.1134/s1064226923090152","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The problem of arbitrary propagation of electromagnetic waves in a tangentially magnetized one-side metallized bigyrotropic layer is solved without using the magnetostatic approximation. It is shown that, in this problem, Maxwell’s equations are reduced to a differential equation corresponding to a biquadratic characteristic equation with four roots <i>k</i><sub><i>x</i>21</sub>, ‒<i>k</i><sub><i>x</i>21</sub>, <i>k</i><sub><i>x</i>22</sub>, and –<i>k</i><sub><i>x</i>22</sub> describing the distribution of the wave in the layer cross section. A dispersion equation for describing waves with real <i>k</i><sub><i>x</i>21</sub> and <i>k</i><sub><i>x</i>22</sub> values is obtained. Using this equation, the characteristics of spin waves in a one-side metallized ferrite plate (a special case of a bigyrotropic layer) are calculated for the frequencies above the ferromagnetic resonance frequency. It is found for these waves that quantity <i>k</i><sub><i>x</i>21</sub> can take both real and imaginary values, while quantity <i>k</i><sub><i>x</i>22</sub>, only real ones. It is found that, at a certain frequency, the spin wave has an isofrequency curve almost identical to a straight line.</p>","PeriodicalId":50229,"journal":{"name":"Journal of Communications Technology and Electronics","volume":"19 2","pages":""},"PeriodicalIF":0.4000,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Communications Technology and Electronics","FirstCategoryId":"94","ListUrlMain":"https://doi.org/10.1134/s1064226923090152","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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Abstract
The problem of arbitrary propagation of electromagnetic waves in a tangentially magnetized one-side metallized bigyrotropic layer is solved without using the magnetostatic approximation. It is shown that, in this problem, Maxwell’s equations are reduced to a differential equation corresponding to a biquadratic characteristic equation with four roots kx21, ‒kx21, kx22, and –kx22 describing the distribution of the wave in the layer cross section. A dispersion equation for describing waves with real kx21 and kx22 values is obtained. Using this equation, the characteristics of spin waves in a one-side metallized ferrite plate (a special case of a bigyrotropic layer) are calculated for the frequencies above the ferromagnetic resonance frequency. It is found for these waves that quantity kx21 can take both real and imaginary values, while quantity kx22, only real ones. It is found that, at a certain frequency, the spin wave has an isofrequency curve almost identical to a straight line.
期刊介绍：
Journal of Communications Technology and Electronics is a journal that publishes articles on a broad spectrum of theoretical, fundamental, and applied issues of radio engineering, communication, and electron physics. It publishes original articles from the leading scientific and research centers. The journal covers all essential branches of electromagnetics, wave propagation theory, signal processing, transmission lines, telecommunications, physics of semiconductors, and physical processes in electron devices, as well as applications in biology, medicine, microelectronics, nanoelectronics, electron and ion emission, etc.
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