Characterization of heat-assisted magnetic probe recording on CoNi/Pt multilayers

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

    Research output: Contribution to journalArticleAcademicpeer-review

    32 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 2-7 V were applied to a CoNi/Pt multilayered film fabricated on either bare silicon or oxidized silicon substrates. Different types of Ir/Pt and W STM tips were used in the experiment. The results show that thermally recorded magnetic marks are formed with a nearly uniform mark size of 170 nm on the film fabricated on bare silicon substrate when the pulse voltage is above a threshold voltage. The mark size becomes 260 nm when they are written on the identical film fabricated on an oxidized silicon substrate. The threshold voltage depends on the material work function of the tip, with W having a threshold voltage about 1 V lower than Pt. A synthesized model, which contains the calculation of the emission current, the simulation of heat transfer during heating, and the study of magnetic domain formation, was introduced to explain experimental results. The simulation agrees well with the experiments. © 2005 Elsevier B.V. All rights reserved.
    Original languageUndefined
    Article number10.1016/j.jmmm.2005.11.022
    Pages (from-to)16-23
    Number of pages8
    JournalJournal of magnetism and magnetic materials
    Volume305
    Issue number500-266/1
    DOIs
    Publication statusPublished - Oct 2006

    Keywords

    • METIS-237857
    • IR-63880
    • Heat-assisted magnetic recording (HAMR)
    • High-density perpendicular recording
    • Scanning tunneling microscope
    • Probe recording
    • EWI-8905
    • TST-uSPAM: micro Scanning Probe Array Memory
    • TST-SMI: Formerly in EWI-SMI

    Cite this

    Zhang, Li ; Bain, James A. ; Zhu, Jian-Gang ; Abelmann, Leon ; Onoue, T. / Characterization of heat-assisted magnetic probe recording on CoNi/Pt multilayers. In: Journal of magnetism and magnetic materials. 2006 ; Vol. 305, No. 500-266/1. pp. 16-23.
    @article{184f7ec96ba24ed192c2f76b3143e3f7,
    title = "Characterization of heat-assisted magnetic probe recording on CoNi/Pt multilayers",
    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 2-7 V were applied to a CoNi/Pt multilayered film fabricated on either bare silicon or oxidized silicon substrates. Different types of Ir/Pt and W STM tips were used in the experiment. The results show that thermally recorded magnetic marks are formed with a nearly uniform mark size of 170 nm on the film fabricated on bare silicon substrate when the pulse voltage is above a threshold voltage. The mark size becomes 260 nm when they are written on the identical film fabricated on an oxidized silicon substrate. The threshold voltage depends on the material work function of the tip, with W having a threshold voltage about 1 V lower than Pt. A synthesized model, which contains the calculation of the emission current, the simulation of heat transfer during heating, and the study of magnetic domain formation, was introduced to explain experimental results. The simulation agrees well with the experiments. {\circledC} 2005 Elsevier B.V. All rights reserved.",
    keywords = "METIS-237857, IR-63880, Heat-assisted magnetic recording (HAMR), High-density perpendicular recording, Scanning tunneling microscope, Probe recording, EWI-8905, TST-uSPAM: micro Scanning Probe Array Memory, TST-SMI: Formerly in EWI-SMI",
    author = "Li Zhang and Bain, {James A.} and Jian-Gang Zhu and Leon Abelmann and T. Onoue",
    note = "10.1016/j.jmmm.2005.11.022",
    year = "2006",
    month = "10",
    doi = "10.1016/j.jmmm.2005.11.022",
    language = "Undefined",
    volume = "305",
    pages = "16--23",
    journal = "Journal of magnetism and magnetic materials",
    issn = "0304-8853",
    publisher = "Elsevier",
    number = "500-266/1",

    }

    Characterization of heat-assisted magnetic probe recording on CoNi/Pt multilayers. / Zhang, Li; Bain, James A.; Zhu, Jian-Gang; Abelmann, Leon; Onoue, T.

    In: Journal of magnetism and magnetic materials, Vol. 305, No. 500-266/1, 10.1016/j.jmmm.2005.11.022, 10.2006, p. 16-23.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Characterization of heat-assisted magnetic probe recording on CoNi/Pt multilayers

    AU - Zhang, Li

    AU - Bain, James A.

    AU - Zhu, Jian-Gang

    AU - Abelmann, Leon

    AU - Onoue, T.

    N1 - 10.1016/j.jmmm.2005.11.022

    PY - 2006/10

    Y1 - 2006/10

    N2 - 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 2-7 V were applied to a CoNi/Pt multilayered film fabricated on either bare silicon or oxidized silicon substrates. Different types of Ir/Pt and W STM tips were used in the experiment. The results show that thermally recorded magnetic marks are formed with a nearly uniform mark size of 170 nm on the film fabricated on bare silicon substrate when the pulse voltage is above a threshold voltage. The mark size becomes 260 nm when they are written on the identical film fabricated on an oxidized silicon substrate. The threshold voltage depends on the material work function of the tip, with W having a threshold voltage about 1 V lower than Pt. A synthesized model, which contains the calculation of the emission current, the simulation of heat transfer during heating, and the study of magnetic domain formation, was introduced to explain experimental results. The simulation agrees well with the experiments. © 2005 Elsevier B.V. All rights reserved.

    AB - 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 2-7 V were applied to a CoNi/Pt multilayered film fabricated on either bare silicon or oxidized silicon substrates. Different types of Ir/Pt and W STM tips were used in the experiment. The results show that thermally recorded magnetic marks are formed with a nearly uniform mark size of 170 nm on the film fabricated on bare silicon substrate when the pulse voltage is above a threshold voltage. The mark size becomes 260 nm when they are written on the identical film fabricated on an oxidized silicon substrate. The threshold voltage depends on the material work function of the tip, with W having a threshold voltage about 1 V lower than Pt. A synthesized model, which contains the calculation of the emission current, the simulation of heat transfer during heating, and the study of magnetic domain formation, was introduced to explain experimental results. The simulation agrees well with the experiments. © 2005 Elsevier B.V. All rights reserved.

    KW - METIS-237857

    KW - IR-63880

    KW - Heat-assisted magnetic recording (HAMR)

    KW - High-density perpendicular recording

    KW - Scanning tunneling microscope

    KW - Probe recording

    KW - EWI-8905

    KW - TST-uSPAM: micro Scanning Probe Array Memory

    KW - TST-SMI: Formerly in EWI-SMI

    U2 - 10.1016/j.jmmm.2005.11.022

    DO - 10.1016/j.jmmm.2005.11.022

    M3 - Article

    VL - 305

    SP - 16

    EP - 23

    JO - Journal of magnetism and magnetic materials

    JF - Journal of magnetism and magnetic materials

    SN - 0304-8853

    IS - 500-266/1

    M1 - 10.1016/j.jmmm.2005.11.022

    ER -