Synthesis, Structure, and Characterization of the Series BaBi1-xTaxO3 (0 ⩽ × ⩽ 0.5).

The sedes BaBi1-xTaxO3 (0 ⩽ x ⩽ 0.5) has been synthesized by traditional solid-state reactions. Their structures are analyzed by the combinational use of X-ray, neutron, and converged-beam electron diffractions. They all crystallize in P1. FTIR and Raman data confirm that an inversion center is absent in the crystal structure of the series BaBi1-xja O3 (0 ⩽ x ⩽ 0.5). No obvious P-E (polarization-electrical field) loops are observed for them. [ABSTRACT FROM AUTHOR]