Permanent magnet and method for preparation thereof

Details Permanent magnet and method for preparation thereof Permanent magnet and method for preparation thereof

2005-10-18

2005-10-18

Koslow, C. Melissa (Department: 1755)

Compositions

Magnetic

Iron-oxygen compound containing

C252S062620, C252S062570, C428S690000, C428S919000

Reexamination Certificate

active

06955768

ABSTRACT:
A ferrite magnet obtained by adding a ferrite having a spinel-type structure to a ferrite having a hexagonal M-type magnetoplumbite structure, in which a portion of Sr, Ba, Pb or Ca is replaced with at least one element that is selected from the group consisting of the rare-earth elements (including Y) and Bi and that always includes La, during the fine pulverization process thereof. By adding a small amount of the element such as Co, Ni, Mn or Zn to the ferrite already having the hexagonal M-type magnetoplumbite structure during the fine pulverization process thereof, the magnetic properties can be improved.

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Translation for JP 11-224812.
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