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) identifier identifier

  • 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.