X-Ray and Neutron Scattering Study of the Magnetic Structure of Neodymium Metal

A combined x-ray and neutron diffraction study has shown that the so-called "triple-$\overrightarrow{\mathrm{q}}$" structure is not the correct model of the magnetic structure of neodymium. The x-ray data showed only the Bragg reflections originating from the double-hcp lattice. Hence, all additional reflections observed below $T_N$ by neutrons are of magnetic origin. Additional neutron-diffraction data have shown that the magnetic structure must be described by modulation wave vectors with components both parallel and perpendicular to the $〈100〉$ axes.