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FePt nanocluster films for high-density magnetic recording.

Y F Xu¹, M L Yan, D J Sellmyer

¹Nebraska Center for Materials and Nanoscience, Department of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588-0111, USA.

Journal of Nanoscience and Nanotechnology

|April 26, 2007

Summary

High anisotropy L1(0) ordered FePt films show promise for ultra-high density magnetic recording media. Various synthesis methods yield controllable magnetic properties for heat-assisted and patterned media applications.

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Area of Science:

Materials Science
Nanotechnology
Magnetism

Background:

L1(0) ordered FePt thin films offer high magnetic anisotropy.
Potential for exceeding 1 Terabit/in² areal density in magnetic recording.

Purpose of the Study:

Review synthesis and magnetic properties of L1(0) FePt nanocomposite films.
Explore fabrication methods for high-anisotropy FePt films.
Assess potential for advanced magnetic recording media.

Main Methods:

Epitaxial and non-epitaxial growth of (001)-oriented FePt:X composite films.
Gas-aggregation technique for monodispersed FePt nanocluster-assembled films.
Chemical synthesis for self-assembled FePt particles.

Main Results:

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Controllable magnetic properties via nanocluster and nanostructure variations.
FePt films demonstrate suitability for heat-assisted magnetic recording.
Self-assembled FePt arrays show potential for single-grain-per-bit media.

Conclusions:

L1(0) FePt nanocomposite films are promising for ultra-high density recording.
Fabrication techniques enable tailored magnetic properties.
FePt-based materials are key for next-generation magnetic storage.