Experimental crystal parameters values for two magnetic metals used to made magnetic recording media.

Table 2: Experimental crystal parameters values for two magnetic metals used to made magnetic recording media.

Material Properties	Metal 1 Fe (bcc)	Metal 2 Co (hcp)
Lattice parameter $a (\overset{0}{A})$ [66]	2.8665	2.5071
Cell volume $V ({(\overset{0}{A})}^{3})$ [67]	11.7807	11.2175
Exchange parameter J(J) [68]	$1.1694 \times 10^{- 19}$	$8.01 \times 10^{- 20}$
First anisotropy K₁ (J.m^-³) [58]	$4.8 \times 10^{4}$	$45 \times 10^{4}$
Second anisotropy K₂ (J.m^-³) [58]	$0.5 \times 10^{4}$	$15 \times 10^{4}$
DW width $Δ (\overset{0}{A})$	$\begin{array}{l} \approx 216.4 \times a \\ = 620.284 \overset{0}{A} \end{array}$	$\begin{array}{l} \approx 54.5494 \times a \\ = 136.752 \overset{0}{A} \end{array}$