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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">radioelectronics</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений России. Радиоэлектроника</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of the Russian Universities. Radioelectronics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1993-8985</issn><issn pub-type="epub">2658-4794</issn><publisher><publisher-name>Saint Petersburg Electrotechnical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32603/1993-8985-2020-23-5-63-70</article-id><article-id custom-type="elpub" pub-id-type="custom">radioelectronics-469</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ЭЛЕКТРОНИКА СВЧ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MICROWAVE ELECTRONICS</subject></subj-group></article-categories><title-group><article-title>Нелинейные колебания намагниченности в касательно намагниченном пленочном ферромагнитном резонаторе</article-title><trans-title-group xml:lang="en"><trans-title>Nonlinear Oscillations of Magnetization in a Tangentially Magnetized Ferromagnetic Film Resonator</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8764-7100</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гапончик</surname><given-names>Р. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Haponchyk</surname><given-names>R. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гапончик Роман Валерьевич – бакалавр по направлению "Электроника и наноэлектроника" (2018), студент 2-го курса магистратуры, ул. Профессора Попова, д. 5, Санкт-Петербург, 197376, Россия</p></bio><bio xml:lang="en"><p>Roman V. Haponchyk, Bachelor’s degree in electronic and nanoelectronics (2018), the 2h year master degree student, 5 Professor Popov St., St Petersburg 197376, Russia</p></bio><email xlink:type="simple">ferumno33@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1596-2849</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лахдеранта</surname><given-names>Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Lähderanta</surname><given-names>E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Эркки Лахдеранта – доктор философии (физика твердого тела) (1993), профессор физики (2004) Школы технических наук, 34 Yliopistonkatu, Lappeenranta, 53850, Finland</p></bio><bio xml:lang="en"><p>Erkki Lähderanta, Dr. Phil. (Solid State Physics) (1993), Professor in Physics (2004) of LUT School of Engineering Science, 34 Yliopistonkatu, Lappeenranta 53850, Finland</p></bio><email xlink:type="simple">erkki.lahderanta@lut.fi</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7382-9210</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Устинов</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Ustinov</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Устинов Алексей Борисович – доктор физико-математических наук (2012), доцент (2010) кафедры физической электроники и технологии, ул. Профессора Попова, д. 5, Санкт-Петербург, 197376, Россия</p></bio><bio xml:lang="en"><p>Alexey B. Ustinov, Dr. Sci. (Phys.-Math.) (2012), Associate Professor (2010) of the Department of Physical Electronics and Technologies, 5 Professor Popov St., St Petersburg 197376, Russia</p></bio><email xlink:type="simple">Ustinov_rus@yahoo.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В. И. Ульянова (Ленина)<country>Россия</country></aff><aff xml:lang="en">Saint Petersburg Electrotechnical University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">ЛТУ-Университет<country>Финляндия</country></aff><aff xml:lang="en">LUT–University<country>Finland</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>24</day><month>11</month><year>2020</year></pub-date><volume>23</volume><issue>5</issue><fpage>63</fpage><lpage>70</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гапончик Р.В., Лахдеранта Э., Устинов А.Б., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Гапончик Р.В., Лахдеранта Э., Устинов А.Б.</copyright-holder><copyright-holder xml:lang="en">Haponchyk R.V., Lähderanta E., Ustinov A.B.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://re.eltech.ru/jour/article/view/469">https://re.eltech.ru/jour/article/view/469</self-uri><abstract><sec><title>Введение</title><p>Введение. Резонаторы на основе эпитаксиально выращенных монокристаллических пленок железоиттриевого граната находят применение в сверхвысокочастотной электронике. Известно, что с ростом падающей на резонатор СВЧ-мощности начинают проявляться различные нелинейные эффекты: эффект бистабильности, нелинейный сдвиг частоты, нелинейное затухание и др. В настоящее время перечисленные нелинейные эффекты достаточно хорошо экспериментально исследованы. Ранее при описании колебаний различных динамических систем нелинейное затухание и нелинейный сдвиг частоты обычно рассматривались по отдельности. Известно, что эти эффекты могут возникать одновременно в пленочных ферромагнитных резонаторах с ростом амплитуды колебаний намагниченности.</p></sec><sec><title>Цель работы</title><p>Цель работы. Построение модели вынужденных колебаний в слабонелинейных системах с учетом нелинейного сдвига частоты и нелинейного затухания, а также ее экспериментальное обоснование на примере пленочного ферромагнитного резонатора.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Построение модели проводилось методом медленно меняющихся амплитуд. Экспериментальное исследование проводилось на макете пленочного ферромагнитного резонатора. Использовался векторный анализатор цепей Rohde&amp;Schwarz ZVA 40. Измерялась частотная зависимость коэффициента отражения СВЧ-сигнала от резонатора.</p></sec><sec><title>Результаты</title><p>Результаты. Модель нелинейных колебаний намагниченности с одновременным учетом нелинейного сдвига частоты и нелинейного затухания. Экспериментально измерены резонансные кривые при различных уровнях падающей на резонатор СВЧ-мощности. Показано, что нелинейное затухание ограничивает нелинейный сдвиг частоты колебаний намагниченности в касательно намагниченном пленочном ферромагнитном резонаторе.</p></sec><sec><title>Заключение</title><p>Заключение. Построенная модель адекватно описывает поведение резонансных кривых пленочных ферромагнитных резонаторов при повышенных уровнях СВЧ-мощности. Нелинейное затухание приводит к расширению резонансных кривых, тем самым увеличивая потери. Этот эффект также увеличивает коэффициент отражения СВЧ-сигнала от резонатора.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Resonators based on epitaxially grown single-crystal films of yttrium iron garnet are used in various applications of microwave electronics. It is known that with increasing of microwave power incident on a resonator, various nonlinear effects begin to manifest themselves. There are: bistability effect, nonlinear frequency shift, nonlinear damping, etc. By now, the listed nonlinear effects have been quite good studied experimentally. Previously, when describing oscillations of various dynamical systems, the nonlinear damping and the nonlinear frequency shift were usually considered separately. At the same time, it was known that, when studying nonlinear magnetization oscillations in ferromagnetic film resonators with an increase in oscillation amplitude, these effects could occur simultaneously.</p></sec><sec><title>Aim</title><p>Aim. Development of a model of magnetization oscillations taking into account the nonlinear frequency shift and nonlinear damping, as well as its experimental justification for a ferromagnetic film resonator.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The development of the model was carried out by the method of slowly varying amplitudes. An experimental study was carried out with a ferromagnetic film resonator. For the measurements, we used Rohde &amp; Schwarz ZVA 40 vector network analyzer. We measured the frequency dependence of the reflection coefficient of the microwave signal from the resonator.</p></sec><sec><title>Results</title><p>Results. A model of nonlinear magnetization oscillations was developed taking into account both a nonlinear frequency shift and a nonlinear attenuation. The resonance curves were experimentally measured at various levels of the microwave power incident on the resonator. It was shown that nonlinear damping limits the nonlinear frequency shift of the magnetization oscillations in a tangentially magnetized ferromagnetic film resonator.</p></sec><sec><title>Conclusion</title><p>Conclusion. The developed model adequately describes behavior of the resonance curves of ferromagnetic film resonators at high microwave power levels. The nonlinear damping leads to broadening of the resonance curves, thereby increasing losses. This effect also increases the reflection coefficient of the microwave signal from the resonator.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>пленочный ферромагнитный резонатор</kwd><kwd>железоиттриевый гранат</kwd><kwd>спиновые волны</kwd><kwd>нелинейные колебания</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ferromagnetic film resonator</kwd><kwd>yttrium iron garnet</kwd><kwd>spin waves</kwd><kwd>nonlinear oscillations</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа поддержана Министерством науки и высшего образования Российской Федерации (проект "Госзадание", грант №0788-2020-0005).</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The work was supported by the Ministry of Science and higher education of the Russian Federation (project "Goszadanie", grant no. 0788-2020-0005).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Ishak W. 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