The magnetic properties of the hollow cylindrical ideal remanence magnet

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Abstract

We consider the magnetic properties of the hollow cylindrical ideal remanence magnet. This magnet is the cylindrical permanent magnet that generates a uniform field in the cylinder bore, using the least amount of magnetic energy to do so. The remanence distribution of this magnet is derived and the generated field is compared to that of a Halbach cylinder of equal dimensions. The ideal remanence magnet is shown in most cases to generate a significantly lower field than the equivalent Halbach cylinder, although the field is generated with higher efficiency. The most efficient Halbach cylinder is shown to generate a field exactly twice as large as the equivalent ideal remanence magnet.
Original languageEnglish
JournalJournal of Magnetism and Magnetic Materials
Volume416
Pages (from-to)321-324
Number of pages4
ISSN0304-8853
DOIs
Publication statusPublished - 2016

Keywords

  • Ideal remanence magnet
  • Halbach cylinder
  • Magnetic field
  • Permanent magnet flux sources
  • Magnetic efficiency

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