Title :
Coercivity mechanism in Nd15.1Fe76.9B permanent magnets
Author :
Plusa, Danuta ; Pfranger, Romualda ; Wyslocki, Boleslaw
Author_Institution :
Inst. of Phys., Tech. Univ. of Czestochowa, Poland
fDate :
11/1/1993 12:00:00 AM
Abstract :
The torque curves performed on Nd15.1Fe76.9B 8 permanent magnets are analyzed taking into account the influence of the demagnetizing field on both the torque and nucleation field. The anisotropy constant Kd resulting from the demagnetizing fields is determined. Domain structure photographs on a surface parallel to the easy axis are taken during the magnetic field rotation from 0° to 360° and 360° to 0°. From the results, it follows that the demagnetization process in Nd15.1Fe76.9B8 magnets occurs by the nucleation of reversed domains
Keywords :
boron alloys; coercive force; demagnetisation; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic domains; neodymium alloys; permanent magnets; Nd15.1Fe76.9B; anisotropy constant; coercivity mechanism; demagnetizing field; domain structure; magnetic field rotation; nucleation field; permanent magnets; reversed domain nucleation; torque curves; Anisotropic magnetoresistance; Coercive force; Demagnetization; Iron; Magnetic analysis; Magnetic fields; Neodymium; Performance analysis; Permanent magnets; Torque;
Journal_Title :
Magnetics, IEEE Transactions on
