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Magnadur

Magnadur is a sintered barium ferrite, specifically BaFe12O19 in an anisotropic form.[1] It is used for making permanent magnets. The material was invented by Mullard and was used initially particularly for focussing rings on cathode-ray tubes. Magnadur magnets retain their magnetism well, and are often used in education, e.g. as slabs with poles on the large faces.[2][3] Magnadur can also be used in DC motors.[4]

Physical characteristics

References

  1. ^ Ellis, Hendrina; Trust, Nuffield-Chelsea Curriculum (1984). Book of Data. Nuffield-Chelsea Curriculumn Trust. p. 132. ISBN 0-582-35448-X.
  2. ^ "Play with magnets". iop.org.
  3. ^ Wenham, Martin W. (18 November 2004). Understanding Primary Science: Ideas, Concepts and Explanations. SAGE Publications Ltd. p. 234. ISBN 1412901634.
  4. ^ Magnadur Magnets for Direct Current Motors. Mullard Ltd. 31 December 1970. ISBN 0901232106.
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