Materials Design and Characterization of (Bi1/2Na1/2)TiO3-Bi(B’,B”)O3 Ceramics
0.995(Bi1/2Na1/2)TiO3-0.005Bi(B’,B”)O3 solid-solution ceramics (B’,B” denote Zn, Mg, Ni, Ti, Nb) were fabricated and their ferroelectric properties were investigated. Based on the structural characteristics of Bi(B’,B”)O3 analyzed by first-principles calculations, a materials design for obtaining a large piezoelectric strain is proposed: an index Z= Ps∙(ε33*∙s33)1/2, where Ps is spontaneous polarization, ε33* is relative permittivity and s33 is elastic compliance. A positive correlation was observed between Z and effective piezoelectric constant d33* observed for strain measurements.
Shinobu Fujihara and Tadashi Takenaka
Y. Oshima et al., "Materials Design and Characterization of (Bi1/2Na1/2)TiO3-Bi(B’,B”)O3 Ceramics", Key Engineering Materials, Vol. 445, pp. 59-62, 2010