Magnetic structure of CuMnBO ludwigite: thermodynamic, magnetic properties and neutron diffraction study.

We report on the thermodynamic, magnetic properties and the magnetic structure of ludwigite-type CuMnBO. The specific heat, low-field magnetization and paramagnetic susceptibility were studied on a single crystal and combined with powder neutron diffraction data. The temperature dependence of the specific heat and the neutron diffraction pattern reveal a single magnetic phase transition at T  =  92 K, which corresponds to the magnetic ordering into a ferrimagnetic phase.