[1] Leibniz IFW Dresden, Inst Integrat Nanosci, Helmholtzstr 20, D-01069 Dresden, Germany
[2] Moldova State Univ, Dept Theoret Phys, Lab Phys & Engn Nanomat, Str A Mateevici 60, MD-2009 Kishinev, Moldova
[3] Natl Res Nucl Univ MEPhI, Inst Engn Phys Biomed, Kashirskoe Shosse 31, Moscow 115409, Russia
[4] Univ Vienna, Fac Phys, Superconduct & Spintron Lab, Nanomagnetism & Magnon, Wahringer Str 17, A-1090 Vienna, Austria