1. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119 334 Moscow, Russian Federation
2. VSB-Technical University of Ostrava, FMST, Regional Materials Science and Technology Centre, 708 00 Ostrava, Czech Republic
3. JSC SPETSMAGNIT, 127 238 Moscow, Russian Federation
4. VSB-Technical University of Ostrava, Department of Physics, 708 00 Ostrava, Czech Republic
5. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50 422 Wroclaw, Poland
6. Physical Department, Moscow State University, 119 991 Moscow, Russian Federation