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Faraday Rotation and Magnetic Dichroism in RbNi(Co)F 3
Author(s) -
Pisarev R. V.,
Siny I. G.,
Nesterova N. N.,
Smolensky G. A.,
Syrnikov P. P.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680300143
Subject(s) - ferrimagnetism , faraday effect , magnetic circular dichroism , condensed matter physics , optical rotation , rotation (mathematics) , materials science , hexagonal crystal system , x ray magnetic circular dichroism , dispersion (optics) , crystal (programming language) , magnetic field , absorption (acoustics) , chemistry , crystallography , physics , optics , magnetization , spectral line , geometry , mathematics , programming language , quantum mechanics , astronomy , computer science
The optical and magneto‐optical properties of hexagonal ferrimagnetic RbNi(Co)F 3 (Co 2+ content ≈ 23%, T c = 109°K) have been studied in the region 0.28 to 12 μm. It is confirmed that this crystal may be regarded as an “easy axis” ferrimagnet. Absorption lines have been interpreted as arising from electronic transitions between crystal field levels of 3 d‐configuration of Ni 2+ and Co 2+ . Below T c a strong anomalous dispersion of Faraday rotation and magnetic circular dichroism was found in the absorption line regions. The origin of these effects is assumed to be associated with exchange splitting of electronic states of Ni 2+ and Co 2+ below T c and with unequivalency of 4f and 2a magnetic sublattices in the hexagonal structure.