The Magnetic Critical Exponent In the 3-state 3-dimensional Potts-model

We perform a numerical study of the Ports model q= 3 in three dimensions with nearest neighbour and next to nearest neigh- bout couplings by means of the finite-size renormalization group method. The analysis of lhe magnetic critical exponents is complementary to the one of the thermal critical exponent already presented by us and confirms our conclusionsthat the transi- tion from the disordered phase to the low-temperatureordered phase is first order