1. International Laboratory of High Magnetic Fields and Low Temperatures, PAS, Wroclaw, Poland, 53-421
2. VSB-Technical University of Ostrava, Ostrava-Poruba, Czech Republic, 708 33
3. Baikov Institute of Metallurgy and Materials Science, RAS, Moscow, Russia, 119991
4. IFW Dresden, Institute of Metallic Materials, Dresden, Germany, D-01171
5. Institute of Low Temperature and Structure Research, PAS, Wroclaw, Poland, 50-422