Magnetizing iron-vanadium or iron-aluminum alloys with ultrashort laser pulses

https://phys.org/news/2023-12-magnetizing-iron-vanadium-alloy-laser-pulses.html

"iron atoms move closer together... demagnetize layer again with series of weaker laser pulses... material melts briefly at irradiation point causing laser to erase previous structure generating small magnetic area... magnetic structure stabilized by subsequent rapid cooling... placing tiny magnets on a chip surface via laser, sensitive magnetic sensors, such as those used in vehicles, magnetic data storage, spintronics, possible approach to future computers"