Stable diamagnetic self-levitation of a micro-magnet by improvement of its magnetic gradients

Stable diamagnetic self-levitation of a micro-magnet by improvement of its magnetic gradients

A disc-shaped SmCo magnet with a diameter of 0.85 mm is levitated above a graphite diamagnetic plate at a height of about 14 mum. The magnet is magnetised into a double dipole. The levitation of multipolar magnets above a diamagnetic material was suggested in 1956 by Boerdijk and patented in 1995 by...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials Vol. 321; no. 4; pp. 259 - 262
Main Authors: Profijt, H.B., Pigot, C., Reyne, G., Grechishkin, R.M., Cugat, O.
Format: Journal Article
Language:English
Published: Elsevier 01-02-2009
Subjects:
Electric power
Engineering Sciences
Online Access:Get full text
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Summary:A disc-shaped SmCo magnet with a diameter of 0.85 mm is levitated above a graphite diamagnetic plate at a height of about 14 mum. The magnet is magnetised into a double dipole. The levitation of multipolar magnets above a diamagnetic material was suggested in 1956 by Boerdijk and patented in 1995 by Pelrine, but without any known published experimental results. In this letter, both theoretical and experimental results are presented.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2008.08.115