DocumentCode :
975664
Title :
High-remanence square-loop Fe-Ni and Fe-Mn magnetic alloys
Author :
Jin, S. ; Tiefel, T.H.
Author_Institution :
Bell Laboratories, Murray Hill, New Jersey
Volume :
16
Issue :
5
fYear :
1980
fDate :
9/1/1980 12:00:00 AM
Firstpage :
1062
Lastpage :
1064
Abstract :
This paper describes the magnetic properties of Fe-rich, Fe-Ni and Fe-Mn binary alloys processed to exhibit high remanence and square hysteresis loops. Recrystallization and decomposition of the cold worked alloys within the low temperature (α+γ) two-phase region lead to an extremely fine but essentially isotropic microstructure with an average particle dia. of 2000-4000 Å. A subsequent wire drawing results in an elongated and aligned fine-scale two-phase (α+α\´) structure with an average calculated particle diameter of several hundred angstroms and a length-to-dia, aspect ratio of 100-300. The Fe-Ni alloys exhibit much lower coercive forces compared with the Fe-Mn alloys, which is attributed to the smaller difference in magnetic saturation moment between the two decomposed phases in the Fe-Ni alloys. An Fe-8 wt% Mn alloy gives magnetic properties ( Br \\sim 18000 G, Br/Bs \\sim 0.96 , and Hc \\sim 28 Oe) comparable to or better than those of the high-cobalt Remendur or Nibcolloy alloys currently used in the remanent reed switches but contains no strategic element such as cobalt, and is very ductile for easy metallurgical processing. The Fe-Mn alloys with higher Mn contents exhibit a potential as permanent magnet alloys.
Keywords :
Hysteresis; Permanent magnet materials; Remanence; Cobalt alloys; Lead; Magnetic hysteresis; Magnetic properties; Manganese alloys; Microstructure; Remanence; Saturation magnetization; Temperature; Wire drawing;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1980.1060677
Filename :
1060677
Link To Document :
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