中文摘要：

用一个僵硬矩阵方法，我们调查有弹性的波浪的繁殖行为在一个维(1D ) 有由伪压力和伪砍波浪的精明的精力 reflection/transmittion 系数的线缺点的 piezoelectric/piezomagnetic (PE/PM ) phononic 晶体(PC ) 。线缺点被 PE 或下午成分层的代替创造。在第一差距存在被考虑的缺点模式和对材料性质和缺点层，事件波浪的类型，缺点层的地点和结构的层的数字的体积部分的缺点模式的影响详细被讨论。数字结果显示缺点模式是最明显当缺点层在完美的 PC 的中间被插入时；发生波浪的类型和缺点层的材料性质在数字，频率的地点和缺点模式，和缺点模式的山峰上有重要效果强烈依赖于缺点层的体积部分。我们希望这份报纸将与 PC 结构为 PE/PM 声学的过滤器或声学的变换器的设计被发现有用。

英文摘要：

Using a stiffness matrix method, we in- vestigate the propagation behaviors of elastic waves in one-dimensional （1D） piezoelectric/piezomagnetic （PE/PM） phononic crystals （PCs） with line defects by calculating energy reflection/transmittion coefficients of quasi-pressure and quasi-shear waves. Line defects are created by the re- placement of PE or PM constituent layer. The defect modes existing in the first gap are considered and the influences on defect modes of the material properties and volume fraction of the defect layers, the type of incident waves, the location of defect layer and the number of structural layers are discussed in detail. Numerical results indicate that defect modes are the most obvious when the defect layers are inserted in the middle of the perfect PCs; the types of incidence wave and material properties of the defect layers have important effects on the numbers, the location of frequencies and the peaks of defect modes, and the defect modes are strongly de- pendent on volume fraction of the defect layers. We hope this paper will be found useful for the design of PE/PM acoustic filters or acoustic transducer with PCs structures.