[发明专利]一种光介电铁电陶瓷材料及其制备方法和应用

权利要求书

1.一种光介电铁电陶瓷材料，其特征在于，所述光介电铁电陶瓷材料的化学通式为(1-x)(K_0.5Na_0.5)NbO₃-xA(M_yNb_1-y)O_3-δ，x为0.005～0.10，y为0.01～0.5；

所述A包括Ca、Ba和Sr中的一种或多种；

所述M包括Mn、Co、Mo和Cr中的一种或多种。

2.根据权利要求1所述的光介电铁电陶瓷材料，其特征在于，所述光介电铁电陶瓷材料的化学通式为：

0.995(K_0.5Na_0.5)NbO₃-0.005Ca(Co_0.5Nb_0.5)O_3-δ、

0.99(K_0.5Na_0.5)NbO₃-0.01Ca(Co_0.5Nb_0.5)O_3-δ、

0.985(K_0.5Na_0.5)NbO₃-0.015Ca(Co_0.5Nb_0.5)O_3-δ、

0.98(K_0.5Na_0.5)NbO₃-0.02Ca(Co_0.5Nb_0.5)O_3-δ、

0.975(K_0.5Na_0.5)NbO₃-0.025Ca(Co_0.5Nb_0.5)O_3-δ、

0.98(K_0.5Na_0.5)NbO₃-0.02Ca(Mo_0.5Nb_0.5)O_3-δ、

0.96(K_0.5Na_0.5)NbO₃-0.04Ca(Mo_0.5Nb_0.5)O_3-δ、

0.94(K_0.5Na_0.5)NbO₃-0.06Ca(Mo_0.5Nb_0.5)O_3-δ、

0.97(K_0.5Na_0.5)NbO₃-0.03Ca(Cr_0.5Nb_0.5)O_3-δ、

0.94(K_0.5Na_0.5)NbO₃-0.06Ca(Cr_0.5Nb_0.5)O_3-δ、

0.91(K_0.5Na_0.5)NbO₃-0.09Ca(Cr_0.5Nb_0.5)O_3-δ、

0.98(K_0.5Na_0.5)NbO₃-0.02Ca(Mn_0.5Nb_0.5)O_3-δ、

0.96(K_0.5Na_0.5)NbO₃-0.04Ca(Mn_0.5Nb_0.5)O_3-δ或

0.94(K_0.5Na_0.5)NbO₃-0.06Ca(Mn_0.5Nb_0.5)O_3-δ。