Visible to the public Frequency modulation spin waves generator via oscillating vortex core in NiFe disk array

TitleFrequency modulation spin waves generator via oscillating vortex core in NiFe disk array
Publication TypeConference Paper
Year of Publication2017
AuthorsChang, L., Kao, M., Tsai, L., Liang, J., Lee, S.
Conference Name2017 IEEE International Magnetics Conference (INTERMAG)
Date Publishedapr
ISBN Number978-1-5386-1086-2
KeywordsBLS, Brillouin spectra, composability, disk array, Frequency modulation, frequency modulation spin waves generator, light scattering, Magnetic cores, magnetic fields, Magnetic resonance, magnonic waveguide, Magnonics, Metrics, microfocused Brillouin light scattering spectroscopy, nanoscale magnetic vortex cores, oscillating behaviors, oscillating vortex core, out of plane radio frequency magnetic field, pubcrawl, Resiliency, Saturation magnetization, spin waves

The study of spin waves (SW) excitation in magnetic devices is one of the most important topics in modern magnetism due to the applications of the information carrier and the signal processing. We experimentally realize a spin-wave generator, capable of frequency modulation, in a magnonic waveguide. The emission of spin waves was produced by the reversal or oscillation of nanoscale magnetic vortex cores in a NiFe disk array. The vortex cores in the disk array were excited by an out of plane radio frequency (rf) magnetic field. The dynamic behaviors of the magnetization of NiFe were studied using a micro-focused Brillouin light scattering spectroscopy (BLS) setup.

Citation Keychang_frequency_2017