Morin-like spin canting in the magnetic CaFe5O7 ferrite: A combined neutron and Mössbauer study

Magnetic structure of CaFe5O7 ferrite has been studied jointly from neutron powder diffraction data and spectroscopic Mössbauer measurements in the thermal range from 5 to 500 K. This coupled work highlights three distinct magnetic domains around two specific temperatures: TM=125 K and TN=360 K. Interestingly, this large study has revealed a magnetic transition associated to a spin rotation at 125 K similar to this one reported by Morin in α-Fe2O3 hematite at TM=260 K.231