We evaluated the values for nonlinear dielectric response coefficients of KTaO3 ceramic while the Devonshire model was used to fit the experimental data.

• 根据Devonshire模型；用最小二乘法使实验数据与之相吻合；估算出KTaO_3陶瓷的介电非线性系数值；并与单晶的数据进行比较.