Affiliation: | 1. Research Institute ‘Ferrite-Domen’,8 Chernigovskaya Street, St Petersburg 196084, Russia;2. Minsk Research Institute of Radiomaterials, 86 Kizhevatova Street, Minsk 220024, Belarus;3. Institute of Solid State and Semiconductor Physics, National Academy of Sciences of Belarus, 17 P. Brovki Street, Minsk 220072, Belarus;4. LPTM CNRS (UPR 9001), Universite Paris 13, 93430 Villetaneuse, France |