Enhanced piezoelectric properties of Fe2O3 and Li2CO3 co-doped Pb[(Zr0.48Ti0.52)0.8(Zn1/3Nb2/3)0.125(Mn1/3Nb2/3)0.075]O3 ceramics for ultrasound transducer applications

Enhanced high‐power performance of Fe‐doped PZMNZT piezoelectric ceramics

“…The peak intensity ratio I near 45 • was defined as I = I (200)R /I (002)T+(200)T , which decreased with the increase of x. The result indicated that the structure shifted toward the tetragonal side of the MPB with the increase of Fe, consistent with observations of Fe-doped PZMNZT ceramics 14. Figure2A--dshows the SEM surface morphology of PZMNZT-xFe ceramics with x = 0.05−0.35 sintered at 1100 • C. All the PZMNZT-xFe ceramics with few porosities showed dense microstructures.…”

“…However, so far, element doping is still a simple and effective method that makes Pb(Zr,Ti)O 3 (PZT)-based ceramics more applicable to high-power applications. Quang et al 14 investigated the electrical properties of the Pb(Zn 1/3 Nb 2/3 )O 3 -Pb(Mn 1/3 Nb 2/3 )O 3 -Pb(Zr,Ti)O 3 piezoelectric ceramics and obtained favorable performance with d 33 = 455 pC/N, Q m = 1455, k p = 0.64, ε r = 1823, T c = 242 • C, and tan δ = 0.3%. Li et al 15 studied the electrical properties of the Cu/Bi co-doped Pb(Mn 1/3 Sb 2/3 )O 3 -Pb(Zr,Ti)O 3 -based piezoelectric ceramics and achieved good performance with d 33 = 410 pC/N, Q m = 1478, k p = 0.62, ε r = 1550, and T c = 330 • C. In addition, many similar works have successfully obtained the good electrical parameters in PZT-based ceramics [16][17][18] and lead-free piezoelectric ceramics, [19][20][21] and provided a method for improving their electrical parameters.…”

“…Pb(Zn 1/3 Nb 2/3 )O 3 -Pb(Mn 1/3 Nb 2/3 )O 3 -Pb(Zr,Ti)O 3 quaternary ceramics featuring both "soft" and "hard" properties are suitable for fabricating high-power piezoelectric ceramics. 14,26 Fe 2 O 3 is an acceptor dopant and can also act as an excellent sintering aid that suppresses the restrictive relationship between "soft" and "hard" properties by improving the sintering quality of PZT ceramics. 3,6,27 Herein, the high-power performance of PZMNZT-xFe ceramics was studied in detail, and the PZMNZT−0.15Fe ceramic with good high-power performance was found promising for high-power applications.…”

“…Quang et al. 14 investigated the electrical properties of the Pb(Zn 1/3 Nb 2/3 )O 3 –Pb(Mn 1/3 Nb 2/3 )O 3 –Pb(Zr,Ti)O 3 piezoelectric ceramics and obtained favorable performance with d 33 = 455 pC/N, Q m = 1455, k p = 0.64, ε r = 1823, T c = 242°C, and tan δ = 0.3%. Li et al.…”

“…Pb(Zn 1/3 Nb 2/3 )O 3 –Pb(Mn 1/3 Nb 2/3 )O 3 –Pb(Zr,Ti)O 3 quaternary ceramics featuring both “soft” and “hard” properties are suitable for fabricating high‐power piezoelectric ceramics 14,26 . Fe 2 O 3 is an acceptor dopant and can also act as an excellent sintering aid that suppresses the restrictive relationship between “soft” and “hard” properties by improving the sintering quality of PZT ceramics 3,6,27 .…”