Phase transitions in 1-D magnetic materials

Ferromagnetic ↔ antiferromagnetic phase transitions for one-dimensional systems are investigated using the Monte Carlo technique. Ground state diagrams are constructed within the framework of the Ising model. Using the Metropolis algorithm, the effects of external magnetic field and temperature variations on phase transitions are examined. Kinetic features of these transitions are included into consideration. It is shown that the correlational length coefficient v for ferromagnetic materials decreases with increase in the external magnetic field strength, while for antiferromagnetic this dependence is reverse. Behavior of the critical dynamic coefficient z under field variations for small one-dimensional magnetic is similar to that of coefficient v. __________ Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 3, pp.54–58, March, 2006.