A model of heat transfer in STM-based magnetic recording on CoNi/Pt multilayers

Li Zhang, James A. Bain, Jian-Gang Zhu, Leon Abelmann, T. Onoue

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    3 Citations (Scopus)

    Abstract

    A method of heat-assisted magnetic recording (HAMR) potentially suitable for probe-based storage systems is characterized. In this work, field emission current from a scanning tunneling microscope (STM) tip is used as the heating source. Pulse voltages of 3-7 V with a duration of 500 ns were applied to a CoNi/Pt multilayered film which is fabricated on a bare silicon and oxidized silicon, respectively. For both substrates, write threshold voltage of 4 V was observed. Above threshold, mark size was 170 and 260 nm for the films on bare silicon and oxidized silicon, respectively. A model of 2-D heat transfer in a multilayered film structure was applied and the mark size difference was explained by the thermal conductivity of the substrate. © 2006 Elsevier B.V. All rights reserved.
    Original languageUndefined
    Article number10.1016/j.physb.2006.01.007
    Pages (from-to)204-208
    Number of pages5
    JournalPhysica B
    Volume381
    Issue number2
    DOIs
    Publication statusPublished - 2006

    Keywords

    • TST-SMI: Formerly in EWI-SMI
    • IR-63421
    • TST-uSPAM: micro Scanning Probe Array Memory
    • METIS-238155
    • EWI-6873

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