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Mar 12, 2017

Researchers from the University of Minnesota developed a magnetic tunnel junction that is switched by using a short pulse of light. The switch operation takes only one trillionth of a second - which makes this the world's fastest magnetic tunnel junction.

Magnetic tunnel junction light-switch photo

To create this device, the researchers used ITO to create a transparent electrode on top of an ally made from called gadolinium, iron and cobalt. This material is already known to be switchable using light pulses.

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