Effect of Bi₂SiO₅ addition on ferroelectric performances and crystal and electronic structures of SrBi₂ (Ta,Nb,M) ₂O₉ (M=W,Mo) ferroelectrics.

Abstract

In our previous work, we focused on SrBi₂(Ta,Nb,M)₂O₉(M=W,Mo)-based sample and Bi₂SiO₅-added ones, and examined their ferroelectric performances and crystal structures. As a result, it was found that all the synthesized samples had the same space group as A2₁am, and SrBi₂ (Ta,Nb,M) ₂O₉-based sample began to show higher Tc and s by adding Bi₂SiO₅. It was also clarified that such a composition change affected crystal and electronic structures.