Nd-Fe-B-Co-Al based permanent magnets with improved magnetic properties and temperature characteristics
- 12 May 1986
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 48 (19) , 1309-1310
- https://doi.org/10.1063/1.96962
Abstract
Magnetic properties have been studied with respect to the boron concentration on Nd‐Fe‐B based magnets. The combined addition of cobalt and aluminum in a Nd‐Fe‐B magnet is remarkably effective for increasing magnetic hardness in the region of low boron concentration. The following magnetic properties were attained for Nd15Fe62.5B5.5Co16Al1 :Br=13.2 kG, iHc=11.0 kOe, (BH)max=41.0 MGOe, and Tc=500 °C. The reversible temperature coefficient of the remanence of the magnet is −0.071%/deg, approximately one‐half of the Nd15Fe77B8 magnet.Keywords
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