Reconsideration of Critical Behavior of Nd Metal

In the light of recent neutron-diffraction studies we have reconsidered the critical behavior of Nd. We argue that it is "nearly" second order with $n=2\mathrm{}$ component Heisenberg-model exponents. We also explain, by considering a secondary magnetic order parameter, different temperature dependences for the magnetic satellites around (0,0,3) and (1,0,0). The theoretical prediction of the corresponding exponents $\beta \sim 0.36$ and ${\beta }^{\prime }\sim 1.08$ is in agreement with the experimental values $\beta =0.36\mathrm{}\pm 0.02$ and ${\beta }^{\prime }=1\mathrm{}\pm 0.3$.