New Determinations of the Saturation Magnetization of Nickel and Iron

Numerous measurements of saturation magnetization of Fe and Ni are reported. Saturation magnetization is determined by consideration of all contributions in the change of magnetization in high magnetic fields, i.e., internal demagnetizing fields, homogeneous rotations, and paramagnetic terms. The value found for the absolute saturation of iron is ${\sigma }_{\text{0,∞}}\text{\hspace{0.17em}=\hspace{0.17em}221.71±0.08\hspace{0.17em}}\mathrm{emu}/\mathrm{g}$ , corresponding to ${\text{M\hspace{0.17em}=\hspace{0.17em}2.216\hspace{0.17em}μ}}_{\mathrm{B}}$ , in good agreement with previously accepted values. For Ni, the absolute saturation value obtained is ${\sigma }_{\text{0,∞}}\text{\hspace{0.17em}=\hspace{0.17em}58.57±0.03\hspace{0.17em}}\mathrm{emu}/\mathrm{g}$ , corresponding to ${\text{M\hspace{0.17em}=\hspace{0.17em}0.616\hspace{0.17em}μ}}_{\mathrm{B}}$ , in good agreement with other previous data but 1.6% larger than the Weiss and Forrer's value of ${\text{M\hspace{0.17em}=\hspace{0.17em}0.606\hspace{0.17em}μ}}_{\mathrm{B}}$ .