Abstract
Monte Carlo simulations are presented for a model for the KDP-type structure, using a simplified pseudo-Ising model. Phase transitions occur for simulated temperatures that concur with analytical results in the limit of weak ordering fields. Significantly non-zero pseudo-spin correlations are found in the paraelectric phase only for the ordering on the PO4 tetrahedra. Most of the computation is Boolean logic, making it ideal for the ICL Distributed Array Processor