A Micellar Approach to Magnetic Ultrahigh-Density Data-Storage Media: Extending the Limits of Current Colloidal Methods

An alternative route for producing L10 FePt nanoparticles based on the self‐organization of diblock copolymers into spherical micelles is presented. It overcomes all of the drawbacks of current colloidal strategies towards densely packed arrays of ferromagnetic FePt nanoparticles while still guarant...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2007-02, Vol.19 (3), p.406-410
Main Authors: Ethirajan, A., Wiedwald, U., Boyen, H.-G., Kern, B., Han, L., Klimmer, A., Weigl, F., Kästle, G., Ziemann, P., Fauth, K., Cai, J., Behm, R. J., Romanyuk, A., Oelhafen, P., Walther, P., Biskupek, J., Kaiser, U.
Format: Article
Language:English
Subjects:
Core/shell nanoparticles
Data storage
Iron
Magnetic materials
Nanoparticle assembly
Platinum
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Summary:An alternative route for producing L10 FePt nanoparticles based on the self‐organization of diblock copolymers into spherical micelles is presented. It overcomes all of the drawbacks of current colloidal strategies towards densely packed arrays of ferromagnetic FePt nanoparticles while still guaranteeing areal densities exceeding 1 Tbits inch–2. The figure shows a sketch of the metal‐salt‐loaded micelles deposited on a substrate: a polystyrene shell (red) covers the poly(2‐vinylpyridine) core (blue) forming a nanoreactor loaded with metal salt (yellow).
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200601759