Magnetic Properties of Sinusoidal Spin‐Density Waves by the Band Model

摘要: Various properties of the sinusoidal spin‐density waves observed in Cr are explained by band model a magnetic medium. By method proposed before, increase free‐energy density due to given distribution magnetization 2μBn(r) is written as function temperature, field, n(r) and its derivatives. In order get stable modulation simple antiferromagnetic ordering, ordinary higher‐order exchange stiffness constants expansion energy power series derivatives expected be negative positive, respectively. New interaction energies between elastic strains n(r), besides magnetoelastic energy, introduced our explain transition transversal longitudinal SSDW's anisotropies, relative directions polarization, susceptibility dilatation; nature at Neel temperature also disc...