Premium
Hyperfine Structure of EPR Spectra of Distorted Antiferromagnetic Trinuclear Metal Clusters
Author(s) -
Shames A. I.,
Belinsky M. I.
Publication year - 1997
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 - 10.1002/1521-3951(199709)203:1<235::aid-pssb235>3.0.co;2-z
Subject(s) - hyperfine structure , antiferromagnetism , electron paramagnetic resonance , chemistry , isosceles triangle , antisymmetric relation , condensed matter physics , field (mathematics) , atomic physics , crystallography , physics , nuclear magnetic resonance , geometry , mathematics , pure mathematics , mathematical physics
The hyperfine electron—nuclear interaction in distorted antiferromagnetic trinuclear metal clusters is considered. The joint effect of antisymmetric exchange, Heisenberg interactions and external magnetic field on the hyperfine structure of the EPR spectrum of trinuclear clusters is taken into account. It is shown that the type of hyperfine structure observed (equilateral, isosceles, scalene) depends upon the ratio between the antisymmetric exchange parameter on the one hand and both the effective parameters of distortions and resonance field on the other hand. Strong C 2 type distortions result in a hyperfine spectrum characterized by intermediate spin. Strong antisymmetric exchange transforms the hyperfine spectrum to the trigonal type.