Excitation Spectrum of the Néel Ensemble of Antiferromagnetic Nanoparticles as Revealed in Mössbauer Spectroscopy

Figure 7

Mössbauer absorption spectra (solid lines) of nuclei in the ensemble of ferrimagnetic particles with calculated in the slow-relaxation regime for different values of the effective energy barrier in the absence of the quadrupolar interaction (). Partial absorption spectra corresponding to the sublattice magnetizations (thin solid lines) and (dotted lines) are also shown.