Faster, more energy efficient opto-magnetic spin memory/ storage uses one-fifth the previous light intensity

https://www.eurekalert.org/news-releases/1072797 

"alloy nanofilms with up to 70% platinum dissolved in cobalt... platinum's relativistic quantum mechanical effect boosts opto-magnetic torque, changing direction of magnets... electron orbital angular momentum generated by circularly polarized light... light-based spin memory/ storage"