Abstract
In order to further increase the recording density in hard disk drives, new media materials are required. Two essential parameters of future recording media are a large uniaxial magnetic anisotropy energy (MAE) and a large saturation magnetization . Based on first-principles theory, we predict that very specific structural distortions of FeCo alloys possess these desired properties. The discovered alloy has a saturation magnetization that is about larger than that of FePt—a compound that has received considerable attention lately—with a uniaxial MAE that can easily be tailored reaching a maximum value that is larger than that of FePt.
- Received 15 January 2004
DOI:https://doi.org/10.1103/PhysRevLett.93.027203
©2004 American Physical Society