Universality of magnetic tricritical points

Publisher Website
Google Scholar
Abstract
A recent renormalization-group treatment of metamagnetic tricritical behavior is applied to more general systems with competing ferromagnetic and antiferromagnetic interactions. In particular, it is found that the next-nearest-neighbor model treated numerically by Stanley and Harbus, and by Landau, should have classical tricritical exponents (up to logarithmic corrections), as found previously for layered metamagnets but in disagreement with conclusions initially drawn from the numerical evidence.