Title :
Aluminum site occupation in Y2Fe14-xAlx B
Author :
Hu, Z. ; Yelon, W.B. ; Marasinghe, G.K. ; James, W.J.
Author_Institution :
Res. Reactor, Missouri Univ., Columbia, MO, USA
fDate :
9/1/1996 12:00:00 AM
Abstract :
Neutron diffraction has been used to study a series of Y2 Fe14-xAlxB solid solutions with x=0.65, 0.92, 1.30, 1.53, and 1.93. Aluminum atoms are found to occupy the j2 and c sites. The Al site affinity appears to be determined by the steric effect (j2) or crystal environment (c). The c lattice parameter increases as the aluminum content x increases, while the a lattice parameter decreases as the aluminum content x increases. The unit cell volume increases as the aluminum content x increases, at a rate around 3 Å3 per Al atom per formula unit, much lower than observed in the Al substituted 2:17 compound. The average Fe site moment decreases as the aluminum content x increases due to the reduction of the Fe content
Keywords :
alloying additions; aluminium alloys; boron alloys; crystal structure; exchange interactions (electron); ferromagnetic materials; iron alloys; lattice constants; neutron diffraction; permanent magnets; yttrium alloys; Al site occupation; Y2(FeAl)14B; Y2Fe14-xAlxB; average Fe site moment; crystal environment; lattice parameter; neutron diffraction; steric effect; unit cell volume increases; Aluminum; Artificial intelligence; Iron; Lattices; Magnetic analysis; Magnetic properties; Neutrons; Solids; X-ray diffraction; X-ray scattering;
Journal_Title :
Magnetics, IEEE Transactions on
