2D dipolar frustrated FM

Inverse transition in a two-dimensional dipolar frustrated ferromagnet.
Sergio A. Cannas, Marianela Carubelli, Orlando V. Billoni, and Daniel A. Stariolo
Phys. Rev. B 84, 014404 (2011)

Monte Carlo phase diagram h vs temperature
for the dipolar Heisenberg model with δ = 3 and η = 8.