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 -