Title :
High energy product of surface modified soft-phase magnets
Author :
Lee, Ching-Ming ; Chang, Ching-Ray ; Yang, Jyh-Shinn ; Chin, T.S.
Author_Institution :
Dept. of Phys., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
9/1/1996 12:00:00 AM
Abstract :
A soft-phase based heterostructure magnet has been analyzed with micromagnetics. Calculated energy product critically depends on the diameter of the inner soft-phase. The volume fraction of the hard-phase shell region providing the high coercivity is much less than the inner soft-phase region. It was proven, at least theoretically, that an energy product of 70 MGOe can easily be achieved for 100 Å diameter soft-phase materials
Keywords :
coercive force; ferromagnetic materials; magnetic particles; permanent magnets; remanence; surface magnetism; 100 angstrom; energy product; hard-phase shell region volume fraction; high coercivity; inner soft-phase diameter; micromagnetics; permanent magnet; soft phase particles; soft-phase based heterostructure magnet; surface modification; Coatings; Coercive force; Iron; Magnetic cores; Magnetic materials; Magnetization; Magnets; Shape; Soft magnetic materials; Tires;
Journal_Title :
Magnetics, IEEE Transactions on
