1. I.M. Frantsevich Institute for Problems of Materials Sciences, NAS of Ukraine, 3 Academician Krzhizhanovskoho Str., UA-03680 Kyiv-142, Ukraine
2. G.V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03680 Kyiv-142, Ukraine
3. Technical Center NAS of Ukraine, 13 Pokrovs’ka Str., 04070 Kyiv, Ukraine