Bias Field Effect on Dielectric and Pyroelectric Properties of (1-x)Pb(Fe_1/2Nb_1/2)O₃–xPbTiO₃Ceramics

Acoustic emission pronounced field‐induced response near critical point in Ba0.6Sr0.4TiO3 ferroelectrics

“…However, both Ba 0.65 Sr 0.35 TiO 3 and Ba 0.6 Sr 0.4 TiO 3 ceramics demonstrate the nontrivial behavior of their T c in dependence on E , characteristic of RFEs . The similar situation observed in PbFe 0.5 Nb 0.5 O 3 FE: while its ϵ exhibits a smeared T m practically without frequency dispersion, in which it undergoes the cubic–rhombohedral phase transition, this T m demonstrates the same nontrivial behavior in dependence on E , characteristic of RFEs . Initially, as E increases, their T c preserve their values and the T c of former strongly increases above approximately E th ≈ 5 kV cm −1 , whereas the T c of the latter strongly increases above approximately E th ≈ 9.5 kV cm −1 .…”

Comparative Studies of Ferroelectric and Magnetic Phase Transitions in Pb(Fe1/2Nb1/2)O3-PbMO3(M-Ti, Zr) Multiferroic Solid Solutions

“…The most studied PFN-based solid solution system is (1-x)PFN-xPbTiO 3 (PFN-xPT) exhibiting high piezoelectric and pyroelectric responses [20,21] for compositions adjacent to the morphotropic phase boundary (MPB) between the rhombohedral (or monoclinic) and tetragonal phases. Similar to other PbB 0 n B 00 m O 3 ¡ PbTiO 3 solid solution systems, this MPB is strongly curved and at room temperature it is located at x 0.06-0.07 [4,21], while at low temperatures, where the magnetic phase transitions take place, the MPB is at about x 0.1 (Fig.…”

Peculiarities of temperature and field dependence of tunability in Ba0.6Sr0.4TiO3 ceramics with differing grain sizes

“…Tmε [22] the temperature maximum of tunability is lower than the position of the temperature maximum of ε at E = 0. Thus, these data confirm the found regularity of tunability.…”