Critical exponents, amplitudes, and correction to scaling in nickel measured by neutron depolarization

The magnetic induction B was measured with a precision better than 2×${10}^{\mathrm{-}4}$ T around the phase transition in a temperature region from $T_c$-20 K to $T_c$+15 K in fields below 1550 A/m. An asymptotic value equal to 0.390(3) was found for the critical exponent β. An effective critical exponent ${\gamma }_{\mathrm{eff}=1.315\mathrm{}\left(15\right)\mathrm{}}$ is given in the range 5×${10}^{\mathrm{-}4}$≤t≤2×${10}^{\mathrm{-}3}$. Four critical amplitudes and one correction to the scaling amplitude are reported.