Piezoelectric properties and temperature stability of Mn-doped Pb(Mg1/3Nb2/3)-PbZrO3-PbTiO3 textured ceramics

Abstract

In this letter, we report the electromechanical properties of textured 0.4Pb(Mg1/3Nb2/3)O3–0.25PbZrO3–0.35PbTiO3 (PMN-PZT) composition which has relatively high rhombohedral to tetragonal (R-T) transition temperature (TR-T of 160 °C) and Curie temperature (TC of 234 °C) and explore the effect of Mn-doping on this composition. It was found that MnO2-doped textured PMN-PZT ceramics with 5 vol. % BaTiO3 template (T-5BT) exhibited inferior temperature stability. The coupling factor (k31) of T-5BT ceramic started to degrade from 75 °C while the random counterpart showed a very stable tendency up to 180 °C. This degradation was associated with the “interface region” formed in the vicinity of BT template. MnO2 doped PMN-PZT ceramics textured with 3 vol. % BT and subsequently poled at 140 °C (T-3BT140) exhibited very stable and high k31 (>0.53) in a wide temperature range from room temperature to 130 °C through reduction in the interface region volume. Further, the T-3BT140 ceramic exhibited excellent hard and soft combinatory piezoelectric properties of d33 = 720 pC/N, k31 = 0.53, Qm = 403, tan δ = 0.3% which are very promising for high power and magnetoelectric applications.

Enhancement of electrical properties in the ternary PMN–PT–PZ through compositional variation, crystallographic texture, and quenching

“…Thus, in our study composition PMNZT4 was deemed to be the optimum composition, but still a detailed study and further improvements were required for actual application. This composition has also been examined by other researchers in the literature, both in single crystal and polycrystalline forms . The properties of polycrystalline PMNZT4 composition was found to be comparable with the literature, as given in Table .…”

“…Solid solutions between these two end members have been studied with an aim to obtain synergistic effects . Compositions around the morphotropic phase boundary have also been investigated in both single crystal and textured ceramic form …”

Giant piezoelectric voltage coefficient in grain-oriented modified PbTiO3 material

“…This phenomenon is analogous to the high g 33 obtained in piezoelectric single crystal–polymer composite. Although <001> textured PMN-PT and textured PMN-PZT ceramics exhibit relatively large g 33 than that of their non-textured counterparts, the temperature range of application is limited by phase transition between rhombohedral and tetragonal phases ( T R-T )131415, as shown in Fig. 1b.…”

Enhanced electromechanical coupling in Pb(Mg1/3Nb2/3)O3-PbTiO3 ⟨001⟩C radially textured cylinders

“…[4][5][6][7][8] Further, spatially controlled texture axis at micron scale can be easily achieved for devices with no-planar electrodes by changing the shape of green tape. 9 Poterala et al have reported a radially h001i C textured PMN-28PT ceramics via wrapping green ceramic tapes around a cylindrical mandrel and demonstrated $50% texture degree using 7 vol.…”