The crystal and magnetic structures of LaCa2Fe3−xMxO8 (M=Al, Ga, In)

► Solubility limits for group 13 elements in LaCa2Fe3O8 are determined. ► Evolution of the magnetic structure with temperature and doping is explored using neutron scattering. ► The magnetic space group is quoted as P2b21'ma' and the staggered moments are obtained for LaCa2Fe3O8 and LaCa2Fe2GaO8.