Table 1.

Physical parameters of magnetite.

the density of massive magnetite ${\rho }_f, \frac{\mathrm{k}\mathrm{g}}{{\mathrm{m}}^3}$ [61]	5240
cell parameters	a = 0.8397 nm, Z = 8
curie point $T_C, \mathrm{K}$ [62]	858
saturation of magnetization $M_S, \mathrm{k}\mathrm{A}/\mathrm{m}$	490
the constant of crystallographic anisotropy $K, \mathrm{J}/{\mathrm{m}}^3$	$1.1\times 10^4$