The number and the peak temperature as well as order-disorder effect of total phasetransition are related to the centre metal ions.
固—固相变数目、相变温度和相变的有序—无序效应主要取决于中心金属离子的种类。
2
On the basis of these new experimental results and the crystal structure data in literature, we suggest that the ferroelectric phasetransition in LiTaO3 may have an order-disorder character.