Aluminum Site Occupation in Y₂Fe₁₄₋ₓAlₓB
Neutron diffraction has been used to study a series of Y₂Fe₁₄₋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.
Z. Hu et al., "Aluminum Site Occupation in Y₂Fe₁₄₋ₓAlₓB," IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers (IEEE), Jan 1996.
The definitive version is available at http://dx.doi.org/10.1109/20.538877
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