Comments on the Substitution Mechanism of Mg-Doped LiTaO3 Ceramics

Many properties of LiTaO3 are influenced by insertion or substitution of the element in this network. We focus our attention on the existence of the defects in the structure of materials LiTaO3 to determine the substitution mechanism of Mg-doped these compounds for different levels. A new approach based on the variation of the Curie-temperature is introduced and combined with different vacancy models to explain the mechanism of substitution of Mg in LiTaO3; the calculated values of TC are close to the experimental data.