Nonstanding spin waves in a single rectangular permalloy microstrip under uniform magnetic excitation

Abstract

Ferromagnetic resonance modes in a single rectangular Ni${}_{80}$Fe${}_{20}$ microstrip were directly imaged using time-resolved scanning transmission x-ray microscopy combined with a phase-locked ferromagnetic resonance excitation scheme and the findings were corroborated by micromagnetic simulations. Although under uniform excitation in a single confined microstructure typically standing spin waves are expected, all imaged spin waves showed a nonstanding character both, at and off resonance, the latter being additionally detected with microantenna-based ferromagnetic resonance. The effect of the edge quality on the spin waves was observed in micromagnetic simulations.

11 pages, 6 figures

References in corpus (4)

• Extracting the Dynamic Magnetic Contrast in Time-Resolved X-ray Transmission Microscopy
• Imaging non-standing spin-waves in confined micron-sized ferromagnetic structures under uniform excitation
• Direct imaging of the ac component of the pumped spin polarization with element specificity
• Spin Pumping from Permalloy into Uncompensated Antiferromagnetic Co doped Zinc Oxide

Cited by in corpus (1)

• Quantifying the spin-wave asymmetry in single and double rectangular Ni${}_{80}$Fe${}_{20}$ microstrips by TR-STXM, FMR and micromagnetic simulations