Specific features of electron spin resonance in quasi-1D magnet β-TeVO 4

摘要

The angular and temperature dependences of single crystal ESR spectra at X-band frequency of quasi-1D spin 4 antiferromagnetic zigzag chain system f-TeVOy, are reported. Two resonance components in the ESR spectrum have been detected: a weak narrow resonance on the top of the extremely broad signal. The narrow line might be due to an impurity, the characteristics of the broad absorption do not correlate with a picture of the typical behavior for the V* ions (S='%) with a square-pyramidal environment. It was found that at low temperatures the divergence of the spin susceptibility and linewidth of the observed excitations can be due to a realization of three-dimensional magnetic ordering.