Fizika Nizkikh Temperatur: Volume 44, Number 11 (November 2018), p. 1491-1500    ( to contents , go back )

EPR spectra of D4h symmetry four-nuclear molecular complex

A.V. Zhuravlev

О.О. Galkin Donetsk Institute of Physics and Engineering, 46 Nauki Ave., Kyiv 03680, Ukraine

Received April 27, 2018, published online September 26, 2018


EPR spectra of spin s=½ four-nuclear single molecular mag-net of D4h symmetry were studied for the nearest neighbors isotropic ferromagnetic exchange and Dzyaloshinskii-Moria interaction as well as axial and local azimuthal anisotropy. Dependence of EPR spectra on Hamiltonian parameters of a spin tetramer is described. Influence of spin mixing on the splitting of spectral lines was considered for inter-multiplet and intra-multiplet transitions. This study resulted in obtaining simple relations between resonance frequencies of particular spectral lines and parameters of local Hamiltonian.

Key words: spin tetramer, multiplet, anisotropy, soin-spin interaction.

Download 392012 byte View Contents