All the films were found exhibiting strong ( 001 ) and ( 002 ) plane reflection of xrd analysis , and the film with the k + / nb5 + molar ration of 2 / 3 ( k2 / 3sbn60 afterwards ) showed the strongest intensity of ( 001 ) plane reflection . the film surface was uniform and smooth 同时,测量mgo衬底上的sbn薄膜和掺k的sbn薄膜的几l系数分别为37 . 6pm / f和58 . 5pm / v ,掺k的sbn60薄膜制成的波导,其半波调制电压明显要比不掺k的波导半波调制电压低。