Transverse ordering of an antiferromagnet in a field with oblique angle tothe easy axis

Motivated by the recent experimental observations [Phys. Rev. B 57, R11051 (1998)] of transverse spin ordering in FeBr2 induced by a magnetic field wi th oblique angle to the easy axis of the system, we performed extensive Mon te Carlo simulations of a classical anisotropic Heisenberg model. We have c alculated the specific heat and the parallel and perpendicular components o f the magnetization as well as the antiferromagnetic order parameter and st udied these quantities asa function of temperature. A tilted spin-flop phas e is obtained for certain parameter values. Many of the effects occurring i n connection with this phase agree qualitatively well with the experimental facts.