Title :
Magnetization reversal processes in MnAl-based permanent magnets
Author :
Ermakov, A.E. ; Uimin, Li A. ; Teitel, E.I. ; Shangurov, A.V. ; Khrabrov, V.I.
Author_Institution :
Inst. of Metal Phys., Acad. of Sci., Sverdlovsk, USSR
fDate :
3/1/1988 12:00:00 AM
Abstract :
There are two main structural states which ensure the high coercive force of MnAl-based alloys. The first is the result of cold deformation and is characterized by a high density of defects where domain walls pin. The second is the result of dynamic recrystallization during hot deformation. It is characterized by small grains and low densities of defects. To determine the optimal deformation, the authors investigated the connection between the structural peculiarities of the alloy and its magnetic properties.
Keywords :
aluminium alloys; coercive force; crystal defects; ferromagnetic properties of substances; magnetisation reversal; manganese alloys; permanent magnets; plastic deformation; MnAl; MnAl-based permanent magnets; cold deformation; domain wall pinning; dynamic recrystallization; high coercive force; high defect density; hot deformation; low defect density; magnetisation reversal; optimal deformation; small grains; structural states; Anisotropic magnetoresistance; Coercive force; Electron microscopy; Grain boundaries; Grain size; Magnetic anisotropy; Magnetic domain walls; Magnetic domains; Magnetization reversal; Permanent magnets;
Journal_Title :
Magnetics, IEEE Transactions on
