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

Figure 1

Normal modes of the self-consistent precession of the sublattice magnetization vectors and of an ideal antiferromagnetic particle for (a) −1.003 and (b) −0.997 with . Hereinafter, all calculations were performed for .

(a)

(b)