Ruthenium Increases Hard Disk Storage
Ruthenium helps increase storage capacity when used for one of the layers of hard disks (magnetic disks).
To increase hard disk storage, the density of magnetic signals in the planar direction used to be increased. When density increased too much though, data storage stability suffered. As a solution, magnetic storage signals were applied perpendicularly to further increase storage density. A base layer of ruthenium under the recording layer was an essential development towards the success of this perpendicular magnetic recording method.