A. S. Sohatsky - FLNR JINR, Dubna, Russian Federation H. W. Chang - Department of Physics, National Chung Cheng University, Chia?Yi, Taiwan I. S. Golovin - National University of Science and Technology ‘‘MISIS’’, Moscow, Russian Federation

HRFD, EMPYREAN (PANalytical) X-ray diffractometer - FLNP JINR Talos F200i (S)TEM electron microscope (Termo Fisher Scientific) - FLNR JINR