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Visualisation of magnetic domain structures through the interaction of their stray fields with magneto-optic garnet films

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Atkinson, R, Kubrakov, NF, O'Neill, M and Papakonstantinou, P (1995) Visualisation of magnetic domain structures through the interaction of their stray fields with magneto-optic garnet films. Journal of Magnetism and Magnetic Materials, 149 . pp. 418-424. [Journal article]

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URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TJJ-3Y5FMDD-2H&_user=126978&_coverDate=09%2F01%2F1995&_alid=1628965172&_rdoc=1&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5312&_sort=r&_st=13&_docanchor=&view=c&_ct=1&_acct=C0

DOI: 10.1016/0304-8853(95)00273-1

Abstract

A technique is described for the indirect visualisation of magnetic domain structures through the coupling of stray surface magnetic fields into a bismuth-substituted garnet layer. The resulting magnetisation distribution within the garnet layer is visualised optically using the polar Kerr effect. A small single-crystal platelet of barium hexaferrite is used to demonstrate the method and the complex, field-induced magnetisation patterns in the garnet are discussed qualitatively. The effect of a small bias field on the magnetisation structures is also considered and has been shown to be a means of simplifying the complex images which are produced. This indirect magneto-optical method of visualising magnetic domains is both effective and convenient, although the ultimate limits of resolution for the technique remain to be determined.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:17056
Deposited By:Professor Pagona Papakonstantinou
Deposited On:11 Feb 2011 10:22
Last Modified:11 Feb 2011 10:22

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