Temperature-insensitive PMN-PZ-PT ferroelectric ceramics for actuator applications

High Piezoelectric Performance in Pb(Ni1/3Nb2/3)O3–Pb(Sc1/2Nb1/2)O3–PbTiO3 Ternary System Featuring Small Structural Distortion and Heterogeneous Domain Configuration

“…The large-signal d 33 * values extracted from the ratio of the maximum unipolar strain to the electric field are shown in Figure c. Especially, the maximum value of d 33 * = 1120 pm/V is obtained at x = 0.14, which is significantly larger than those of other lead-based systems, such as 0.84PFN-0.07PIN-0.09PT ( d 33 * = 797 pm/V), 0.48PMN-0.1PFN-0.1PZ-0.32PT ( d 33 * = 700 pm/V), and Sm-0.15Pb­(Mg 1/3 Nb 2/3 )­O 3 -0.42PbZrO 3 -0.43PbTiO 3 (Sm-PMN-PZ-PT, d 33 * = 870 pm/V). ,, …”

“…Remarkably, the room-temperature dielectric constant of PNN-PSN-PT is higher than those registered in other systems (for all of the MPB components), such as PFN-PIN-PT (4835), PMN-PFN-PZ-PT (2500), and Sm-PMN-PZ-PT (2780). 34,37,54 Piezoelectric materials with good temperature stability can find application in a high-temperature operation environment. Not only the dielectric constant but also the temperaturedependent ferroelectric property is the criterion of stability.…”

Ferroelectric Polymer Nanofibers Reminiscent of Morphotropic Phase Boundary Behavior for Improved Piezoelectric Energy Harvesting

“…[30,36] In this way, P(VDF-TrFE) is quite similar to PMN-PT ceramic systems with high piezoelectricity, which also possess both the MPB region and relaxor ferroelectric characteristics. [28,37,38] Nonetheless, there is no investigation for piezoelectric device applications and derived fabrication processes in this extremely important field of electroactive polymers because the MPB-associated phase competition and transition of ferroelectric P(VDF-TrFE) polymers is still a very early stage research topic, in contrast to ferroelectric ceramics. [30][31][32] Herein, we investigate the energy harvesting device fabricated by the MPB-associated P(VDF-TrFE) copolymer nanofibers through electrospinning.…”

Enhancing Electromechanical Properties of Pb(Sc1/2Nb1/2)O3‐PbZrO3‐PbTiO3 Piezoelectric Ceramics via Templated Grain Growth

“…Ternary ferroelectric solid solution systems with additional high Curie temperature end member are favored and expected to be conducive to real applications due to their increased Curie temperatures and polarization stabilities meanwhile maintaining comparable piezoelectric properties to PMN‐PT. [ 9,10 ] Examples of ternary solid‐solutions such as Pb(Yb 1/2 Nb 1/2 )O 3 ‐Pb(Mg 1/3 Nb 2/3 )O 3 ‐PbTiO 3 (PYN‐PMN‐PT), [ 11 ] Pb(In 1/2 Nb 1/2 )O 3 ‐Pb(Mg 1/3 Nb 2/3 )O 3 ‐PbTiO 3 (PIN‐PMN‐PT), [ 12–14 ] and Pb(Mg 1/3 Nb 2/3 )O 3 ‐PbZrO 3 ‐PbTiO 3 (PMN‐PZ‐PT) [ 15–19 ] have been investigated as polycrystalline, single crystals, and textured ceramics. By modifying into a ternary composition such as PMN‐PZ‐PT polycrystalline ceramic, the d 33 is able to be maintained on the order of 450 pC/N while the T c can be increased to above 250 °C.…”

“…By modifying into a ternary composition such as PMN‐PZ‐PT polycrystalline ceramic, the d 33 is able to be maintained on the order of 450 pC/N while the T c can be increased to above 250 °C. [ 18–20 ] Further enhancement of piezoelectric and dielectric properties will also exist closer to the rhombohedral–tetragonal morphotropic phase boundary (MPB), allowing for potential compositional engineering for optimal response at higher temperatures. [ 21,22 ] Considering the low‐cost ZrO 2 and high Curie temperature of PbZrO 3 (PZ) on the order of 230 °C, the combination of PZ in PSN‐PT is expected to increase both Curie temperature and piezoelectric properties at MPB composition of the ternary ceramic system.…”