Neutron diffraction and magnetic study of the low-temperature transitions in SrMo1−xFexO3−δ

► SrMo1−xFexO3−δ (x = 0, 0.1, 0.2 and 0.3) were obtained as polycrystalline powders. ► Cooling, two structural transitions are identified, tetragonal and orthorhombic. ► DSC curves exhibit an endothermic peak close to 240 K. ► Magnetic behavior of the samples changes, inducing a ferromagnetic character. ► The tilt angles are appreciably high at low temperatures.