Microwaves reverse magnetization

Researchers at the Institut Néel in Grenoble, France, have come up with a new and efficient way to reverse the magnetization of individual nanoparticles. The technique, which makes use of radio-frequency field pulses, might be used to optimize hard drive writing times or help advance new MRAM device technologies……

http://nanotechweb.org/cws/article/tech/56874

Microwave-assisted switching