Potentional photomagnetic materials based on cation photochromic mononitrosyl complex of ruthenium L.A. Kushch, L.S. Plotnikova, Yu.N. Shvachko, V.A. Emel'yanov, E.B. Yagubskii, G.V. Shilov and S.M. Aldoshin J. Phys. IV France, 114 (2004) 459-462 DOI: 10.1051/jp4:2004114107