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Related Experiment Video

Updated: Dec 23, 2025

Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques

Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques

Published on: July 2, 2018

Spin Wave Injection and Propagation in a Magnetic Nanochannel from a Vortex Core.

Liang-Juan Chang¹, Jilei Chen², Danru Qu¹

¹Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.

|April 24, 2020

Summary

Researchers demonstrate efficient excitation of high-frequency spin waves in reconfigurable magnetic textures. These spin waves propagate along nanochannels formed by domain walls, paving the way for energy-efficient nanoscale magnonic devices.

Keywords:

Brillouin light scattering Spintronics domain wall magnetic vortex core dynamics tunable high-frequency spin waves

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Last Updated: Dec 23, 2025

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Published on: February 2, 2012

Area of Science:

Condensed Matter Physics
Materials Science
Nanotechnology

Background:

Spin waves are promising for low-dissipation information transfer.
Reconfigurable magnonic circuits are key for advanced magnonic applications.
Controlling spin wave propagation in nanoscale magnetic textures is challenging.

Purpose of the Study:

To experimentally demonstrate effective excitation of spin waves in reconfigurable magnetic textures.
To investigate the coupling and propagation of spin waves along domain wall nanochannels.
To explore the potential for energy-efficient, programmable nanoscale magnonic devices.

Main Methods:

Fabrication of nickel-iron (Ni80Fe20, Py) nanodisk-film hybrid structures.
Experimental excitation of spin waves at high frequencies (up to 15 GHz).
Characterization of spin wave propagation in domain wall nanochannels at zero magnetic bias field.

Main Results:

Achieved effective excitation of spin waves at 15 GHz with wavelengths as short as 80 nm.
Demonstrated coupling of spin waves from nanodisks to propagate along nanochannels formed by magnetic domain walls.
Observed spin wave propagation at zero magnetic bias field.

Conclusions:

Tunable, high-frequency, short-wavelength spin waves can be excited and propagated in reconfigurable magnetic textures.
Domain wall nanochannels effectively guide spin waves, enabling nanoscale propagation.
These findings are vital for developing energy-efficient and programmable nanoscale magnonic devices.