Nonlinear gigahertz magnetization oscillations in iron garnet films with maze domains induced by strong magnetic pulses

Japanese Journal of Applied Physics 2026 Open access

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Authors: Takumi Koguchi, Hibiki Miyashita, Toshiaki Watanabe, Eri Negishi, Yuichi Nakamura, Mitsuteru Inoue, Kazushi ISHIYAMA, Mehmet C. Onbaşlı, Taichi Goto
DOI: 10.35848/1347-4065/ae41fa
Cited by: 0
References: 40

Abstract

Abstract Maze-type magnetic domains in iron garnet films exhibit extraordinary dynamic responses to Tesla-order magnetic field pulses with nanosecond durations. Through micromagnetic simulations, we found that these magnetic domains oscillate at gigahertz frequencies through repeated domain expansion and shrinking. The oscillation frequency and amplitude respond nonlinearly to the pulse amplitude and width, enabling this system to function as a magnetic field-to-frequency converter. We also demonstrate a technique for sustaining continuous oscillations. These results provide insights into key functionalities for next-generation high-frequency magnetic device applications.

Fields of Study & Subjects

Magnetic properties of thin films Magnetic Properties and Applications Magneto-Optical Properties and Applications

Publication details

Journal / source
Japanese Journal of Applied Physics
Volume
65
Issue
4
Pages
040904–040904
Publication date
23 February 2026
Language
EN