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

Sy-Hwang Liou, S. S. Malhotra, John Moreland, P. F. Hopkins

Research output: Contribution to journalArticle

20 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)135-137
Number of pages3
JournalApplied Physics Letters
Volume70
Issue number1
DOIs
StatePublished - Jan 6 1997

Fingerprint

recording heads
magnetic force microscopy
high resolution
thin films
spatial resolution
gradients
profiles
magnetic fields

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

High resolution imaging of thin-film recording heads by superparamagnetic magnetic force microscopy tips. / Liou, Sy-Hwang; Malhotra, S. S.; Moreland, John; Hopkins, P. F.

In: Applied Physics Letters, Vol. 70, No. 1, 06.01.1997, p. 135-137.

Research output: Contribution to journalArticle

Liou, Sy-Hwang ; Malhotra, S. S. ; Moreland, John ; Hopkins, P. F. / High resolution imaging of thin-film recording heads by superparamagnetic magnetic force microscopy tips. In: Applied Physics Letters. 1997 ; Vol. 70, No. 1. pp. 135-137.
@article{29257c6aa0b244d1abe767938e32ed96,
title = "High resolution imaging of thin-film recording heads by superparamagnetic magnetic force microscopy tips",
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.",
author = "Sy-Hwang Liou and Malhotra, {S. S.} and John Moreland and Hopkins, {P. F.}",
year = "1997",
month = "1",
day = "6",
doi = "10.1063/1.119286",
language = "English (US)",
volume = "70",
pages = "135--137",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "1",

}

TY - JOUR

T1 - High resolution imaging of thin-film recording heads by superparamagnetic magnetic force microscopy tips

AU - Liou, Sy-Hwang

AU - Malhotra, S. S.

AU - Moreland, John

AU - Hopkins, P. F.

PY - 1997/1/6

Y1 - 1997/1/6

N2 - 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.

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.

UR - http://www.scopus.com/inward/record.url?scp=0000248602&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000248602&partnerID=8YFLogxK

U2 - 10.1063/1.119286

DO - 10.1063/1.119286

M3 - Article

VL - 70

SP - 135

EP - 137

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 1

ER -