Date of Original Version
Work on the Ising chain with competing interactions is extended to the case where a staggered field is included as well as the usual direct field. A simple transformation enables one to interpret the behavior of this model as a metamagnet. Tricritical points are found and analyzed, and the observability of the tricritical exponents, as distinguished from the usual critical exponents, is discussed.
John F. Nagle and Jill C. Bonner. Ising Chain with Competing Interactions in a Staggered Field. J. Chem. Phys. 54, 729 (1971).
Available at: http://dx.doi.org/10.1063/1.1674903