Controlling/ altering material's magnetic ordering via non thermal nanoscale light field manipulation/ spatial beam shaping

https://www.eurekalert.org/news-releases/1145546

"optical switching concentrating light energy onto microscopic scale using multiple fs pulses (up to 1,000X faster than traditional magnetic field writing), eliminating need for specific light polarizations/ reliance on external magnetic fields... reversed magnetic regions in 9-layer platinum/ cobalt material (previously limited to ultrathin 3-layer films)... ultra-fast/ energy-efficient: data storage (vastly higher density), spintronic computing... future: further confine laser beams to few hundred nm"