Study of Structure and Magnetic Properties of SmCo₁₀ Alloy Prepared by Different Methods

Table 2

The fitting results for 2:17R and 1:7H phases in SmCo₁₀ alloys with different states. , calculated from the fractional coordinates of Sm and Co in standard 2:17R and 1:7H unit cells represents the distance between Sm and its first and second Co shells in standard 2:17R and 1:7H structures. factor is the sum-of-squares measure of the fractional misfit. The errors of , , and are shown behind the “±.”

Phase	Co shells of Sm	(Å)	(Å^2)		(Å)	(Å)	factor
2:17R in as-cast alloy	First shell	2.985 ± 0.02	0.0050 ± 0.002	7	2.812	0.173 ± 0.02	0.0081
	Second shell	3.117 ± 0.03	0.0095 ± 0.003	12	3.162	−0.045 ± 0.03
2:17R in annealed alloy	First shell	2.980 ± 0.03	0.0034 ± 0.001	7	2.812	0.168 ± 0.03	0.0739
	Second shell	3.117 ± 0.04	0.0076 ± 0.002	12	3.162	−0.045 ± 0.04
1:7H in as-spun ribbons	First shell	2.872 ± 0.06	0.0133 ± 0.004	6.667	2.811	0.061 ± 0.06	0.0024
	Second shell	3.367 ± 0.04	0.0102 ± 0.002	12	3.172	0.195 ± 0.04