Characterization of high-density bit-patterned media using ultra-high resolution magnetic force microscopy

S. N. Piramanayagam, M. Ranjbar, R. Sbiaa, K. G A Tavakkoli, T. C. Chong

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Bit-patterned media at one terabit-per-square-inch (Tb/in 2) recording density require a feature size of about 12 nm. The fabrication and characterization of such magnetic nanostructures is still a challenge. In this Letter, we show that magnetic dots can be resolved at 10 nm spacing using magnetic force microscopy (MFM) tips coated with a magnetic film possessing a perpendicular magnetic anisotropy (PMA). Compared to MFM tips with no special magnetic anisotropy, MFM tips with PMA can resolve the bits clearly, because of a smaller magnetic interaction volume, enabling a simple technique for characterizing fine magnetic nanostructures.

Original languageEnglish
Pages (from-to)141-143
Number of pages3
JournalPhysica Status Solidi - Rapid Research Letters
Volume6
Issue number3
DOIs
Publication statusPublished - Mar 2012

Fingerprint

Magnetic force microscopy
magnetic force microscopy
Magnetic anisotropy
anisotropy
Nanostructures
high resolution
Magnetic films
magnetic films
recording
spacing
Fabrication
fabrication
interactions

Keywords

  • Bit-patterned media
  • Magnetic force microscopy
  • Nanostructures
  • Perpendicular magnetic anisotropy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Science(all)

Cite this

Characterization of high-density bit-patterned media using ultra-high resolution magnetic force microscopy. / Piramanayagam, S. N.; Ranjbar, M.; Sbiaa, R.; Tavakkoli, K. G A; Chong, T. C.

In: Physica Status Solidi - Rapid Research Letters, Vol. 6, No. 3, 03.2012, p. 141-143.

Research output: Contribution to journalArticle

Piramanayagam, S. N. ; Ranjbar, M. ; Sbiaa, R. ; Tavakkoli, K. G A ; Chong, T. C. / Characterization of high-density bit-patterned media using ultra-high resolution magnetic force microscopy. In: Physica Status Solidi - Rapid Research Letters. 2012 ; Vol. 6, No. 3. pp. 141-143.
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