Information storage by the depth-dependent direction of magnetization in domain walls (IMAGE)
Caption
Information is stored by the depth-dependent direction of magnetization in the domain walls, which are located between the cylinder domains and their surroundings. This magnetization of the domain walls can point clockwise or counterclockwise in the individual blocks, which are separated vertically by ruthenium layers. By systematically varying these directions, researchers can encode different bit sequences within a cylinder domain, as is shown here with some artistic interpretation.
Credit
HZDR/Bernd Schröder
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License
CC BY-SA