Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.1088/1361-6463/ac1762

Ключевые слова: ferromagnetic resonance, frequency doubling, nonlinear dynamics, thin magnetic film, second harmonic

Аннотация: Second harmonic generation versus strength and direction of the applied static magnetic field was measured for a thin permalloy (Ni80Fe20) film in a microstrip line at a driving frequency of 1 GHz and maximum input power of similar to 110 mW. The measurements revealed two peaks in the double frequency signal-in the low static field (similar to 10 Oe) and the high one (similar to 45 Oe). To explain these findings, a macrospin model of a thin magnetic film with in-plane uniaxial magnetic anisotropy was considered. A perturbation expansion of the Landau-Lifshitz-Gilbert equation provided an explanation of the experimental data. The analysis of the model revealed that the low-field peak was caused by the longitudinal second-order magnetization component and the high-field peak by the transversal one. It was also shown that the uniaxial magnetic anisotropy of the film and the dependence of the magnetic damping parameter on the applied field play an important role in the process of the second harmonic generation. The results obtained give insights into some peculiarities of the nonlinear magnetization dynamics that are important in the development of magnetic film-based devices in the field of microwave signal processing and manipulation.

Журнал: JOURNAL OF PHYSICS D-APPLIED PHYSICS

Выпуск журнала: Vol. 54, Is. 42

Номера страниц: 425002

ISSN журнала: 00223727

Место издания: BRISTOL

Издатель: IOP PUBLISHING LTD

• Solovev P.N. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia)
• Afonin A.O. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia)
• Belyaev B.A. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia; Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia)
• Boev N.M. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia; Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia)
• Govorun I.V (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia)
• Izotov A.V (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia; Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia)
• Ugrymov A.V (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia)
• Leksikov A.A. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia)

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