Permanent magnet materials based on tetragonal rare earth compounds of the type RFe12−xMx

摘要: Abstract A review is given of the occurrence and composition ternary rare earth compounds RT12−xMx based on tetragonal ThMn12 structure. Most form with T = Fe but there are also examples withT Co, NiorMn. Particular attention paid to site preference nonmagnetic component M, (Al, Si, Ti, V, Cr, Mo, W, Re). discussion magnetic properties corresponding nitrides obtained after changing nitrogen gas. The important role played by intersublattice coupling magnetocrystalline anisotropy these materials stressed. Advantages disadvantages as permanent magnet discussed.