中文摘要：

采用平面波展开法，数值计算了二维磁振子晶体的带结构，其中磁振子晶体是由铁（Fe）圆柱和椭圆柱散射体分别按长方或正方排列在氧化铕（EuO）基底中形成的．研究了圆柱和椭圆柱分别在正方或长方排列下对带隙结构的影响，数值结果表明，在长方排列下利用椭圆柱散射体能够优化带隙，而在正方排列下圆柱散射体的磁振子晶体带隙结构更为优化，可见散射体的形状和排列方式是影响带隙结构优化的重要因素．

英文摘要：

Band structures of two-dimensional magnonic crystals composed of Fe circular rods or Fe elliptic rods rectangularly or squarely arranged in a EuO matrix are numerically calculated by using the plane-wave expansion method. The numerical results show that the band gap of magnonic crystals with elliptic rods is more optimized in the rectangular arrangement, whereas, the band gap of the case with circular rods is more optimized in the square arrangement. It is obvious that the shape and the arrangement of scatterers are very important to optimize the gap of magnonic crystals.