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UL Lafayette physicist's latest paper shows possibility to generate ultrashort pulses by ferromagnetic nanoparticles
Mon, 07/25/2022 - 1:54pm
In a new article published in APL Materials by Dr. Michalis Charilaou of the Physics Department, simulations predict that soft ferromagnetic particles with a size of only a few tens of nanometers, like the ones shown in the figure, can be used to generate ultrashort electromagnetic pulses when an external magnetic field is applied to them. The external magnetic field changes the configuration of the internal magnetic field of the material in such a way that the rapid changes induce emergent electrodynamics with a substantial magnitude in a short time that lasts only a few picoseconds (0.00000000001 second). This suggests that ferromagnetic nanostructures could be used to generate local electromagnetic pulses, which is promising for designing miniaturized functional nanoscopic devices for various energy conversion applications.
The article was published on July 5th 2022 (link https://aip.scitation.org/doi/10.1063/5.0097610">here) as part of the special topic with title Science and Technology of 3D Magnetic Nanostructures of the journal APL Materials.