Nanostructured FePt films for magnetic media applications
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چکیده
Smaller, faster, denser and cheaper magnetic disk drives are demanded for information storage using magnetic media. Increase in high areal density in magnetic recording requires small bit cells with very small grain size. The reduction of bit cell volume and grain size will eventually be constrained by the undesirable thermal instability of magnetization due to the superparamagnetic effect, thus ultimately limiting the achievable areal density. Very fine grained, thermally stable ferromagnetic media materials require high magnetocrystalline anisotropy constant. Nanostructured L1o FePt alloys, with very high anisotropy constant, large Ms, high corrosion resistance and small domain size, are potential high density magnetic recording media.
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