High resolution imaging of thin-film recording heads by superparamagnetic magnetic force microscopy tips

S. H. Liou; S. S. Malhotra; John Moreland; P. F. Hopkins

doi:10.1063/1.119286

High resolution imaging of thin-film recording heads by superparamagnetic magnetic force microscopy tips

S. H. Liou, S. S. Malhotra, John Moreland, P. F. Hopkins

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

We have used superparamagnetic magnetic force microscopy (MFM) tips to obtain high spatial resolution MFM images of recording heads. Profiles of the magnetic field gradient above a thin-film recording head under 3 mA bias current to the head and various tip-head distance conditions are presented. At a low tip-head distance, the gap width, gap location, and gap-field structure can be well resolved in these MFM images. Superparamagnetic tips show promise for the magnetic imaging of recording heads with gap widths below 200 nm.

Original language	English (US)
Pages (from-to)	135-137
Number of pages	3
Journal	Applied Physics Letters
Volume	70
Issue number	1
DOIs	https://doi.org/10.1063/1.119286
State	Published - Jan 6 1997

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.119286

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abstract = "We have used superparamagnetic magnetic force microscopy (MFM) tips to obtain high spatial resolution MFM images of recording heads. Profiles of the magnetic field gradient above a thin-film recording head under 3 mA bias current to the head and various tip-head distance conditions are presented. At a low tip-head distance, the gap width, gap location, and gap-field structure can be well resolved in these MFM images. Superparamagnetic tips show promise for the magnetic imaging of recording heads with gap widths below 200 nm.",

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AU - Moreland, John

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AB - We have used superparamagnetic magnetic force microscopy (MFM) tips to obtain high spatial resolution MFM images of recording heads. Profiles of the magnetic field gradient above a thin-film recording head under 3 mA bias current to the head and various tip-head distance conditions are presented. At a low tip-head distance, the gap width, gap location, and gap-field structure can be well resolved in these MFM images. Superparamagnetic tips show promise for the magnetic imaging of recording heads with gap widths below 200 nm.

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High resolution imaging of thin-film recording heads by superparamagnetic magnetic force microscopy tips

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