1. Institute for Problems of Material Science, NASU, Krzhyzhanovskyy str. 3, 03142, Kiev, Ukraine
2. Chernivtsi National University, Kotsyubinsky str. 2, 58012, Chernivtsi, Ukraine
3. JSCP SPU 'Saturn', 50-let Oktybrya av. 2b, 03148, Kiev, Ukraine
4. SINTEF Materials and Chemistry, Forskningsveien 1, Blindern, NO-0314 Oslo, Norway
5. Linkoping University, Department of Physics, Chemistry and Biology (IFM), 58183 Linköping, Sweden