Diffuse critical neutron scattering above the antiferromagnetic first-order phase transition has been observed in the cerium monopnictide CeSb. Whereas the long-range ordering below T N =16.4K has type-A2/3 structure with superlattice peaks at q 0 =(2 pi / alpha ) (0,0, 2 / 3 ) the fluctuations are of type-I antiferromagnetic (AF/I) structure and disappear when the long-range ordering occurs. This frustration indicates that the system is near a Lifshitz point. The longitudinal spin correlation is anisotropic and the transverse fluctuations are unobservably small. The authors analysed the critical behaviour by a mean-field treatment of a Hamiltonian that includes strong cubic anisotropy.
No takes yet. Share an insight, caveat, or question.
Hälg et al. (1981) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: