Exchange spring media
Exchange spring media (also exchange coupled composite media or ECC
Besides the improved writeability, another advantage of exchange spring media is, that the switching field distribution of the grains, which has to be as small as possible to allow for high storage densities, can be decreased. This effect was predicted theoretically and experimentally verified on Co/Pd multilayers as hard layer coupled to Co/Ni multilayers as soft layer.[4] In commercial hard disks exchange spring media is used since about 2007.[5][6]
See also
- Heat-assisted magnetic recording — Another technology to improve the writeability of high coercive materials such as FePt
- Patterned media
- Shingled magnetic recording
References
- S2CID 29531529.
- .
- S2CID 16178527.
- ISSN 0003-6951.
- ISSN 0021-8979.
- ISBN 978-1-118-09682-6.