Effect of sintering temperature on the density, piezodielectric response, and mechanical and elastic properties of materials of different functional groups

Highly Effective Ferroelectric Materials and Technologies for Their Processing

“…They are characterized by the ultrahigh values of piezoelectric responses that are higher than those in the ceramics of Pb(Ti, Zr) O 3 (for instance, PZT-5H) [7]. In order to find new materials for underwater applications, we used the above RF and PT as a basic component in combination with another RF (Pb(Ni 1/3 Nb 2/3 ) O 3 ) [8]. Table 1.1 summarizes the room temperature basic electrical parameters of the ceramics studied and some their analogs (from PCR group) [9] prepared by hot pressing, and expensive technique.…”

Features of Dielectric and Electromechanical Response of PMN-PT Based Materials in Electric Fields

“…Ceramics of group II may be used in sensors of pressure, deformation, etc. due to their high piezoelectric coefficient [35,37]. Materials of group III can be used in force piezoelectric devices, such as piezomotors.…”

“…The decrease in concentration of PT (x < 0.40) leads to the transformation of ε/ε 0 minimum in plateau-like sections (x = 0.30-0.325) and their disappearance when x < 0.30. Moreover, with decreasing of PT concentration morphotropic phase transition from T to cubic (C) phase occurs [35,37]. There is a region of coexistence of T and Psc phases at x ≈ 0.30-0.375.…”

Effect of barium on the structure and dielectric properties of multicomponent ceramics based on ferroelectric relaxors

“…The optimal t sint of the unmodified ceramics was 1220°C, and that of the modified ceramics was 1180°C. Given that, as shown earlier [14], increasing t sint to 1220°C reduces the density of the modified ceramics under consideration by just 0.5%, ceramic bodies of both the modified and unmodified solid solutions can be obtained by sintering at the same temperature (which is convenient from the viewpoint of processing). In view of this, ceramics were prepared by sintering at 1220°C for 3 h.…”

“…The purpose of this study is to assess the effect of bar ium on the dielectric and piezoelectric properties of ceramics in the multicomponent system (z = 0 and 0.05, m = 0.4541, y = 0.0982, n = 0.1477, x = 0.3), near a morphotropic phase region [14], pre pared by a standard ceramic processing technique via a columbite route [15]. The columbite like com pounds MgNb 2 O 6 , NiNb 2 O 6 , and ZnNb 2 O 6 were syn thesized from the oxides MgO, NiO, ZnO, and Nb 2 O 5 in two steps: in the case of ZnNb 2 O 6 and MgNb 2 O 6 , fir ing at t 1 = 1000°C and t 2 = 1100°C for 6 and 4 h, respec tively; in the case of NiNb 2 O 6 , firing at t 1 = 1000°C and t 2 = 1240°C for 6 and 2 h, respectively.…”