In-situ magnetising experiments on small regularly shaped permalloy particles

Hefferman, S.J., Chapman, J.N. and McVitie, S. (1991) In-situ magnetising experiments on small regularly shaped permalloy particles. Journal of Magnetism and Magnetic Materials, 95(1), pp. 76-84. (doi: 10.1016/0304-8853(91)90217-X)

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The magnetisation process in small regular permalloy particles is investigated using the Foucault mode of Lorentz electron microscopy. Results are presented for particles of three different thicknesses, 17, 60 and 95 nm, with in-plane dimensions lying in the range 0.25 to 4.00 μm. From a study of Foucault images recorded under an applied field, hysteresis loops of individual particles are constructed. Examples of these are given together with a qualitative explanation of how the transition between solenoidal and non-solenoidal magnetisation distributions is dependent on particle dimensions.

Item Type:Articles
Glasgow Author(s) Enlighten ID:McVitie, Professor Stephen and Chapman, Professor John
Authors: Hefferman, S.J., Chapman, J.N., and McVitie, S.
College/School:College of Science and Engineering
College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Magnetism and Magnetic Materials
Publisher:Elsevier Science Publishers B.V.

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