1. Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics,” Russian Academy of Sciences, Leninsky prospekt 59, 119333 Moscow, Russia
2. National Research Center “Kurchatov Institute,” Pl. akademika Kurchatova 1, 123098 Moscow, Russia
3. Physics Department, Moscow State University, Leninskie Gory 1-2, 119991 Moscow, Russia