Phase diagram of (Na0.5K0.5)NbO3-(Bi0.5Na0.5)ZrO3 solid solution

Phase diagram of (1 - x)Na0.5K0.5NbO3-x(Bi0.5Na0.5)ZrO3 solid solution has been established from dielectric constant measurements and structure analyses. It is found that with increasing x, the C-T phase transition temperature TC-T and the T-O phase transition temperature TT-O decrease, while the O - R phase transition temperature TO-R increases. TT-O of NKN-xBNZ is much different from that of NKN-xBZ solid solution. The result could be mainly elucidated by the hybridization between the A-site ion and oxygen.