Controlling multidomain states to enable sub-10-nm magnetic force microscopy

Nissim Amos, Rabee Ikkawi, Robert Haddon, Dmitri Litvinov, Sakhrat Khizroev

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


The letter reports experimental data to demonstrate magnetic force microscopy (MFM) with sub-10-nm resolution under ambient conditions. To achieve this record high resolution, multidomain states in a nanomagnetic probe were controlled. Two demagnetized (multidomain) FePt (45/55) films sputtered on a silicon probe and separated by an 8 nm thick MgO layer were further annealed at temperature of 650 °C to trigger the high-anisotropy L 10 phase. A field of above 2 T was applied to drive the probes into a saturated "single-domain" state. The multidomain probes were equivalently compared with state-of-the-art conventional MFM probes via comparative imaging of benchmark magnetic recording disks.

Original languageEnglish (US)
Article number203116
JournalApplied Physics Letters
Issue number20
StatePublished - 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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