The magnetic phase diagram of MnSi was studied using small angle neutron scattering. The results were analysed using the three-dimensional resolution function and the scattering cross section to model the diffraction data. A small phase pocket (phase 'A') just below TN is found to be a modulated antiferromagnet.
Wilfried Kurz, Stéphane Dobler
Frédéric Mila, Bruce Normand, Philippe Heller, Nicolas Laflorencie