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The influence of the [Formula: see text]-site ion substitutions in ([Formula: see text](Bi[Formula: see text]Na[Formula: see text]TiO 3 –[Formula: see text]BaTiO 3 system of solid solutions on the relative stability of the antiferroelectric (AFE) and ferroelectric (FE) phases has been studied. The ions of zirconium, tin, and (In[Formula: see text]Nb[Formula: see text], (Fe[Formula: see text]Nb[Formula: see text], (Al[Formula: see text]V[Formula: see text] ion complexes have been used as substituting elements. An increase in the concentration of the substituting ion results in a near linear variation in the size of the crystal lattice cell. Along with the cell size variation, a change in the relative stability of the AFE and FE phases takes place according to the changes of the tolerance factor of the solid solution. An increase in the tolerance factor leads to the increase in the temperature of the FE–AFE phase transition, and vice versa. Obtained results indicate the way for raising the temperature of the FE–AFE phase transition in (Bi[Formula: see text]Na[Formula: see text]TiO 3 -based solid solutions.

Dimensional t-factor variation and increase of stability of the ferroelectric state in (Na0.5Bi0.5)TiO3-based solid solutions

Dimensional t-factor variation and increase of stability of the ferroelectric state in (Na0.5Bi0.5)TiO₃-based solid solutions