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Weak Pair Exchange Interactions between Cobalt Ions in Quasi‐One‐Dimensional Antiferromagnet CsCoCl 3
Author(s) -
Voronkova V. K.,
Mosina L. V.,
Usachev A. E.,
Yablokov Yu. V.
Publication year - 1990
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.2221580134
Subject(s) - electron paramagnetic resonance , spectral line , antiferromagnetism , spin (aerodynamics) , cobalt , exchange interaction , ion , chemistry , anisotropy , crystallography , condensed matter physics , physics , nuclear magnetic resonance , inorganic chemistry , ferromagnetism , quantum mechanics , organic chemistry , thermodynamics
The EPR spectra of single Co 2+ −Co 2+ pairs in CsMg 1− x Co x Cl 3 ( x = 0.0001 to 0.04) in X‐ and Q‐ bands are investigated. One type of single Co 2+ spectra and four types of additional spectra attributed to Co 2+ Co 2+ pairs coupled by weak spin‐spin interactions are observed. Using computer simulation of EPR spectra the parameters of spin‐spin interaction are determined. The observed EPR spectra and the expected pair Co 2+ Co 2+ interactions in CsMg 1− x Co x Cl 3 are analysed. The exchange parameters for the nearest neighbour Co 2+ −Co 2+ pairs in the ab ‐plane are estimated. The nature of the exchange anisotropy is discussed.