DocumentCode :
967557
Title :
Dependence of the permanent magnet properties of Mn55 Al45 on particle size
Author :
McCurrie, R.A. ; Rickman, J. ; Dunk, P. ; Hawkridge, D.G.
Author_Institution :
University of Bradford, Bradford, West Yorkshire, U.K.
Volume :
14
Issue :
5
fYear :
1978
fDate :
9/1/1978 12:00:00 AM
Firstpage :
682
Lastpage :
684
Abstract :
The magnetic properties of the alloy Mn55 Al45 in its metastable ferromagnetic state have been investigated as a function of particle size in the range 1000μm down to about 20μm. It has been shown that the coercivity rises very rapidly as the particle size decreases but the remanence was shown to increase slowly and then to decrease rapidly due to the disorder resulting from the plastic deformation during grinding. The maximum intrinsic coercivity of 5 KOe was obtained for 63-75 μm particles while the maximum remanence of 60 e.m.u/g was obtained for 125-150 μm particles. The best potential permanent magnet properties were obtained for 125-150 μm particles viz, 
MGOe, 
KG, andB Hc = 2 kOe.
MGOe, KG, andKeywords :
Permanent magnet materials; Coercive force; Iron alloys; Magnetic materials; Magnetic properties; Manganese alloys; Metastasis; Permanent magnets; Plastics; Remanence; Saturation magnetization;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1978.1059950
Filename :
1059950
Link To Document :
