Synthesis and Ferroelectric Properties of Bi_4.5Sr_0.5Ti₄Fe_0.5-xV_xO₁₅ Ceramics

Abstract

The Bi_4.5Sr_0.5Ti₄Fe_0.5-x V _x O₁₅ (BSTFV) solid solutions which consist of the mixture of Bi₅Ti₃FeO₁₅ and SrBi₄Ti₄O₁₅ Aurivillius phases were synthesized and the ferroelectric properties of the solid solutions were characterized in this study. The formation of solid solutions in the composition range of 0-0.05 was recognized on the basis of the variations in the lattice parameters and the small amounts of V substitution also exerted an influence on the ferroelectric properties and grain growth of BSTFV. As a result, the well-saturated P-E hysteresis loop was obtained at x = 0.03 (P _r = 16μC/cm² and E _c = 96 kV/cm).

Keywords:

• Aurivillius phase
• ferroelectric property
• V substitution Bi_4.5Sr_0.5Ti₄
• Fe_0.5-x V _x O₁₅
• Bi₅Ti₃FeO₁₅
• SrBi₄Ti₄O₁₅