Affiliation: | a High Pressure Group, Institute of Metal Physics of Russian Academy of Sciences, Urals Division, 18S. Kovalevskaya Str., GSP-170, Yekaterinburg 620041, Russia b The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8581 Chiba, Japan c Institut de Minéralogie et de Physique des Milieux Condensés, Université Pierre et Marie Curie Paris 6 - CNRS, 140 rue de Lourmel, 75015 Paris, France d A.V. Nikolaev Institute of Inorganic Chemistry of Russian Academy of Sciences, Siberian Division, Novosibirsk 630090, Russia |