[1] Russian Acad Sci, Inst Met, Ural Branch, 101 Amundsena Str, Ekaterinburg 620016, Russia
[2] Ural Fed Univ, 19 Mira Str, Ekaterinburg 620002, Russia
[3] Russian Acad Sci, LD Landau Inst Theoret Phys, 2 Kosygina Str, Moscow 119334, Russia
[4] Russian Acad Sci, Joint Inst High Temp, 13-2 Izhorskaya Str, Moscow 125412, Russia
[5] Moscow Inst Phys & Technol, 9 Inst Skiy Per, Dolgoprudnyi 141700, Moscow Region, Russia
[6] Russian Acad Sci, Inst High Pressure Phys, Troitsk 142190, Russia