Numéro
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
Page(s) C8-1541 - C8-1542
DOI https://doi.org/10.1051/jphyscol:19888705
Proceedings of the International Conference on Magnetism

J. Phys. Colloques 49 (1988) C8-1541-C8-1542

DOI: 10.1051/jphyscol:19888705

A STAGGERED QUADRUPOLE PHASE FOR A SPIN-ONE ISING SYSTEM WITH ANTIFERROMAGNETIC BIQUADRATIC INTERACTIONS

I. Ono

Department of Physics, Tokyo Institute of Technology, Oh-Okayama, Meguro-ku, Tokyo 152, Japan


Abstract
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.