Itinerant ferromagnet Re4−xMnxGe7−δ (x = 0.9–1.5, δ = 0.42–0.44) with incommensurate chimney-ladder structure stabilised at ambient pressure

Re 4− x Mn x Ge 7− δ ( x = 0.9–1.5, δ = 0.42–0.44) is a new Nowotny chimney-ladder phase with an incommensurate composite structure of transition element and Ge substructures. The phase demonstrates ferromagnetic ordering with T C of 157 K.