Finite-size effect on Tc of Ni NPs

Finite-size scaling behavior and intrinsic critical exponents of nickel: Comparison with the three-dimensional Heisenberg model.
Jun Wang, Wei Wu, Fan Zhao, and Guo-meng Zhao
Phys. Rev. B 84, 174440 (2011)

(a) Plot of T_C versus the mean diameter of the Ni NPs. The best fit yields ν = 1.06 ±0.07 and ξ0 = 0.65 ± 0.10 nm. (b) Same for Ni nanowires. The best fit yields ν = 1.03 ± 0.05 and ξ0 = 2.4 ± 0.4 nm.