Table 7.

Hyperfine parameters of $R_2$Fe${}_{17-x}$.

	${\mathit{\mu }}_0{\mathit{H}}_{\mathbf{HF}}\left(\mathit{T}\right)$	Ref
Y${}_2$Fe${}_{17}$	9.4(2)	[99]
Nd${}_2$Fe${}_{17}$	15.9(1)	[100]
Sm${}_2$Fe${}_{17}$	22.1(2)	[38]
Gd${}_2$Fe${}_{17}$	27.2(2)	[101]
Tb${}_2$Fe${}_{17}$	24.4(1)	[102]
Dy${}_2$Fe${}_{17}$	21.5(4)	[42]
Ho${}_2$Fe${}_{17}$	20.1(2)	[99]
Tm${}_2$Fe${}_{17}$	17.1(1)	[103]
Er${}_2$Fe${}_{17}$	9.8(1)	[104]