Substitution effect of Li in BiNaTiO

Yoneda, Yasuhiro   ; Hiruma, Yuji*; Nagata, Hajime*; Takenaka, Tadashi*

BiNaTiO is paid to attention as an alternative material of PbTiO for the use of an piezoelectric oscillator. In the problem in use as the piezoelectric vibrator, the depolarization temperature is a low. A lot of attempts to increase the depolarization temperature have been performed. Being able to raise the depolarization temperature as an additive only is a lithium. We performed the structure analysis to clarify the T increasing mechanism on Li-doped iNaTiO. As a result, Randomness owing to the deference between the ionic size of Na and Bi decreases from the structure though Li is doping done, and it has been understood that the order structure is predominant.