Scanning Hall probe microscopy of ferromagnetic structures

Howells, GD; Oral, AHMET; Bending, SJ; Andrews, SR; Squire, PT; Rice, P; de Lozanne, A; Bland, JAC; Kaya, I; Henini, M

doi:10.1016/s0304-8853(98)01002-6

Scanning Hall probe microscopy of ferromagnetic structures

Howells G., Oral A., Bending S., Andrews S., Squire P., Rice P., ...More

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol.196, pp.917-919, 1999 (SCI-Expanded, Scopus)

Publication Type: Article / Article
Volume: 196
Publication Date: 1999
Doi Number: 10.1016/s0304-8853(98)01002-6
Journal Name: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Page Numbers: pp.917-919
Keywords: scanning probe microscopy, Hall sensors, ferromagnetic materials
Middle East Technical University Affiliated: No

Abstract

A state-of-the-art scanning Hall probe microscope (magnetic field sensitivity:spatial resolution: 30 nT/root Hz: 0.8 mu m-300 nT/root Hz : 0.25 mu m) has been used to image a range of ferromagnetic media. The technique is non-invasive and yields quantitative profiles of the stray fields near the sample surface as illustrated by images of a standard magnetic reference sample, permalloy nanostructures and colossal magnetoresistive perovskites. Rapid scanning (similar to 1 frame/12 sec) has also been used to study the domain reversal in a thin Ni him. (C) 1999 Published by Elsevier Science B.V. All rights reserved.