D_4、D_(4v)、D_(4h)和D_(2d)类晶体三阶极化率张量的非零元素

ON NON-ZORO ELEMENTS OF THREE-STAGE SUSCEPTIBILITY TENSOR OF CRYSTAL D_4、D_(4v)、 D_(4h)AND D_(2d)

本文以Ｄ４类晶体为例，介绍一种用晶体对称变换确定电极化率张量非零元素的方法，并由此给出Ｄ４类晶体三阶极化率张量非零元素具体形式的正确表述．

In this papar,the auther introduces an approaches of utilizing the symmetry operation on crystal and determining non-zoro elements of susceptibility tensor.By means of this approach, the author works out the exact result of the definite form of non-zero elements of three-stage susceptibllity tensor of Crystal D4.