Approach to terabit density for magnetic data storage using direct optical patterning of Fe(Co)-based thin films

Nikolay I. Polushkin; B. A. Gribkov; A. Ya. Lopatin

doi:10.1117/12.562650

28 May 2004 Approach to terabit density for magnetic data storage using direct optical patterning of Fe(Co)-based thin films

Nikolay I. Polushkin, B. A. Gribkov, A. Ya. Lopatin

Author Affiliations +

Proceedings Volume 5401, Micro- and Nanoelectronics 2003; (2004) https://doi.org/10.1117/12.562650
Event: Micro- and Nanoelectronics 2003, 2003, Zvenigorod, Russian Federation

Abstract

We report on physical mechanisms and methods for optical (λ=300-150 nm) patterning of thin alloyed layers of transition metals (Fe, Co) via laser-induced ferromagnetic ordering (LIFO) in the initially paramagnetic alloys. It is argued that LIFO preceded by film melting and arises due to phase separation in the alloys. Using a laser (λ=300-150 nm) interferometric technique for direct patterning on the phase transitions, we have successfully produced large-area (up to 1 cm) arrays of nanoscale (down to 100 nm) magnets. Due to the observed threshold character of LIFO, the patterned features can be small comparable to the radiation wavelength (~λ/10). This finding is expected to allow making the extreme features (down to 15-20 nm) and thus gives a potential advantage for using such directly patterned magnetic media in future storage data systems with ultrahigh densities ( ~ 1 Tbit/in²). The first experiments on formation of the extreme features by use of LIFO have been performed.

Citation Download Citation

Nikolay I. Polushkin, B. A. Gribkov, and A. Ya. Lopatin "Approach to terabit density for magnetic data storage using direct optical patterning of Fe(Co)-based thin films", Proc. SPIE 5401, Micro- and Nanoelectronics 2003, (28 May 2004); https://doi.org/10.1117/12.562650

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