Demonstration of ultra-high-resolution MFM images using Co90Fe10-coated CNT probes

Sang Jun Choi, Ki Hong Kim, Young Jin Cho, Hu san Lee, Soo haeng Cho, Soon Ju Kwon, Jung hwan Moon, Kyoung Jin Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We demonstrate ultra-high-resolution magnetic force microscopy images of perpendicular magnetic storage media using carbon nanotube probes coated by ferromagnetic Co90Fe10 films (20, 30, 40, and 50 nm). By optimizing ferromagnetic film thickness (effective tip diameter), we obtained best magnetic domain image with an 40 nm-Co90Fe10-coated tip (50 nm tip diameter) about a lateral detect density of 1200 k flux per inch on perpendicular magnetic storage medium, one of the highest resolutions in MFM imaging reported for this material system and structure. The observed dependence of tip dimension on signal contrast and image resolution was successfully explained by a theoretical analysis indicating that the signal contrast, along with the physical probe-tip dimension, should be taken into account to design magnetic probes tips for high-resolution magnetic force microscopy.

Original languageEnglish
Pages (from-to)332-336
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume322
Issue number3
DOIs
Publication statusPublished - 2010 Feb 1

Fingerprint

magnetic force microscopy
Image resolution
Magnetic storage
Magnetic force microscopy
Demonstrations
carbon nanotubes
probes
high resolution
magnetic storage
Magnetic domains
Carbon Nanotubes
ferromagnetic films
Film thickness
Carbon nanotubes
Fluxes
Imaging techniques
magnetic probes
image resolution
magnetic domains
film thickness

Keywords

  • CNT probe
  • CoFe
  • FCI
  • Magnetization value
  • MFM

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Demonstration of ultra-high-resolution MFM images using Co90Fe10-coated CNT probes. / Choi, Sang Jun; Kim, Ki Hong; Cho, Young Jin; Lee, Hu san; Cho, Soo haeng; Kwon, Soon Ju; Moon, Jung hwan; Lee, Kyoung Jin.

In: Journal of Magnetism and Magnetic Materials, Vol. 322, No. 3, 01.02.2010, p. 332-336.

Research output: Contribution to journalArticle

Choi, Sang Jun ; Kim, Ki Hong ; Cho, Young Jin ; Lee, Hu san ; Cho, Soo haeng ; Kwon, Soon Ju ; Moon, Jung hwan ; Lee, Kyoung Jin. / Demonstration of ultra-high-resolution MFM images using Co90Fe10-coated CNT probes. In: Journal of Magnetism and Magnetic Materials. 2010 ; Vol. 322, No. 3. pp. 332-336.
@article{70884d7948a942d68a7abe6e0686dfda,
title = "Demonstration of ultra-high-resolution MFM images using Co90Fe10-coated CNT probes",
abstract = "We demonstrate ultra-high-resolution magnetic force microscopy images of perpendicular magnetic storage media using carbon nanotube probes coated by ferromagnetic Co90Fe10 films (20, 30, 40, and 50 nm). By optimizing ferromagnetic film thickness (effective tip diameter), we obtained best magnetic domain image with an 40 nm-Co90Fe10-coated tip (50 nm tip diameter) about a lateral detect density of 1200 k flux per inch on perpendicular magnetic storage medium, one of the highest resolutions in MFM imaging reported for this material system and structure. The observed dependence of tip dimension on signal contrast and image resolution was successfully explained by a theoretical analysis indicating that the signal contrast, along with the physical probe-tip dimension, should be taken into account to design magnetic probes tips for high-resolution magnetic force microscopy.",
keywords = "CNT probe, CoFe, FCI, Magnetization value, MFM",
author = "Choi, {Sang Jun} and Kim, {Ki Hong} and Cho, {Young Jin} and Lee, {Hu san} and Cho, {Soo haeng} and Kwon, {Soon Ju} and Moon, {Jung hwan} and Lee, {Kyoung Jin}",
year = "2010",
month = "2",
day = "1",
doi = "10.1016/j.jmmm.2009.09.052",
language = "English",
volume = "322",
pages = "332--336",
journal = "Journal of Magnetism and Magnetic Materials",
issn = "0304-8853",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - Demonstration of ultra-high-resolution MFM images using Co90Fe10-coated CNT probes

AU - Choi, Sang Jun

AU - Kim, Ki Hong

AU - Cho, Young Jin

AU - Lee, Hu san

AU - Cho, Soo haeng

AU - Kwon, Soon Ju

AU - Moon, Jung hwan

AU - Lee, Kyoung Jin

PY - 2010/2/1

Y1 - 2010/2/1

N2 - We demonstrate ultra-high-resolution magnetic force microscopy images of perpendicular magnetic storage media using carbon nanotube probes coated by ferromagnetic Co90Fe10 films (20, 30, 40, and 50 nm). By optimizing ferromagnetic film thickness (effective tip diameter), we obtained best magnetic domain image with an 40 nm-Co90Fe10-coated tip (50 nm tip diameter) about a lateral detect density of 1200 k flux per inch on perpendicular magnetic storage medium, one of the highest resolutions in MFM imaging reported for this material system and structure. The observed dependence of tip dimension on signal contrast and image resolution was successfully explained by a theoretical analysis indicating that the signal contrast, along with the physical probe-tip dimension, should be taken into account to design magnetic probes tips for high-resolution magnetic force microscopy.

AB - We demonstrate ultra-high-resolution magnetic force microscopy images of perpendicular magnetic storage media using carbon nanotube probes coated by ferromagnetic Co90Fe10 films (20, 30, 40, and 50 nm). By optimizing ferromagnetic film thickness (effective tip diameter), we obtained best magnetic domain image with an 40 nm-Co90Fe10-coated tip (50 nm tip diameter) about a lateral detect density of 1200 k flux per inch on perpendicular magnetic storage medium, one of the highest resolutions in MFM imaging reported for this material system and structure. The observed dependence of tip dimension on signal contrast and image resolution was successfully explained by a theoretical analysis indicating that the signal contrast, along with the physical probe-tip dimension, should be taken into account to design magnetic probes tips for high-resolution magnetic force microscopy.

KW - CNT probe

KW - CoFe

KW - FCI

KW - Magnetization value

KW - MFM

UR - http://www.scopus.com/inward/record.url?scp=70350543762&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70350543762&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2009.09.052

DO - 10.1016/j.jmmm.2009.09.052

M3 - Article

AN - SCOPUS:70350543762

VL - 322

SP - 332

EP - 336

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

IS - 3

ER -