Tailoring Curie temperature and dielectric properties by changing the doping sites of Y ions in (Ba, Ca)(Zr, Ti)O3 ceramics

Dielectric, Ferroelectric, and High-Temperature Strain Behavior of Rare Earth Ce-Doped 0.67BiFeO3–0.33BaTiO3 Lead-Free Ferroelectric Ceramics

“…This ultimately disrupts the stability of the ferroelectric phase, leading to a reduction in the T m . 30 The BF−BT-based ceramics also featured a low tan δ value of ∼0.04 to 0.05 at room temperature, which rapidly increased above 200 °C. The high electrical conductivity contributes to the high tan δ of BF−BT-based ceramics.…”

“…It is evident from the text that the decrease in T m with increasing x is attributed to the introduction of Ce 4+ doping in lead-free BF-BT ceramics, resulting in lattice irregularities that adversely affect the formation and stability of the electric dipole moment. This ultimately disrupts the stability of the ferroelectric phase, leading to a reduction in the T m . The BF–BT-based ceramics also featured a low tan δ value of ∼0.04 to 0.05 at room temperature, which rapidly increased above 200 °C.…”