J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988Proceedings of the International Conference on Magnetism
|Page(s)||C8-1541 - C8-1542|
J. Phys. Colloques 49 (1988) C8-1541-C8-1542
A STAGGERED QUADRUPOLE PHASE FOR A SPIN-ONE ISING SYSTEM WITH ANTIFERROMAGNETIC BIQUADRATIC INTERACTIONSI. Ono
Department of Physics, Tokyo Institute of Technology, Oh-Okayama, Meguro-ku, Tokyo 152, Japan
We have found a so-called "staggered quadrupole phase" for a simpler version of Blume, Emery and Griffiths model of spin-one Ising system, including only biquadratic interaction and anisotropic energy. The bilinear (exchange) interaction is not always necessary for the occurrence of this phase. The phase diagram obtained by the mean-field approximation has been confirmed by our Monte Carlo simulations.