Non-Heisenberg two-dimensional ferromagnet in an external magnetic field
V.I. Vernadski Tavrida National University, Vernadski pr. 4, Simferopol 95007, Ukraine
Corresponding author: a email@example.com
Revised: 24 November 2003
Published online: 18 June 2004
The phase states of a non-Heisenberg two-dimensional ferromagnet are studied, in which the long-range magnetic order is stabilized by the magnetoelastic interaction. It is shown that in this system, together with the phases of nonzero magnetic order, there exists a quadrupolar phase characterized by a tensor order parameter at zero external field. The transition temperature from the quadrupolar phase to the paramagnetic phase is determined.
PACS: 75.10.-b – General theory and models of magnetic ordering / 75.30.Kz – Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004