Key points are not available for this paper at this time.
The induced electrorheological solid has thick columns in the field direction (z axis), spreading between two electrodes. The ground state is proposed to be a body-centered tetragonal lattice with a₁= 6 ax^, a₂= 6 ay^, and a₃=2az^, where a is the radius of dielectric spheres. This bct lattice can be regarded as a compound of chains of class A and B, where chains B are obtained from chains A by shifting a distance a in the z direction.
Tao et al. (1991) studied this question.