Our calculation shows different behaviors of structure formation in positive - and negative - polarized systems and a critical dielectric constant at which a ground state transition happens is reported 我们发现,由于多极矩效应的影响, er流体中正负偶极矩因子的对称性将被打破,并进一步地计算了颗粒负极化时体系基态结构发生转变的临界值。