Electrical properties and temperature behavior of ZnO-doped PZT–PMnN modified piezoelectric ceramics and their applications on therapeutic transducers

Enhanced Dielectric and Ferroelectric Properties of Pb(Mg1/3Nb2/3)0.65Ti0.35O3 Ceramics by ZnO Modification

“…Moreover, as the ionic radius of Zn 2+ ion is similar to that of the Mg 2+ ion, it is possible that the Zn 2+ ion substituted for the Mg 2+ ion. This is consistent with the previous results observed in the PMN-PZN-PT, [19][20][21] PZT-PMS-PZN, 11 PZN-PZT, 14 PZNT, 30 PZT-PMnN, 31 PZT-PFW-PMN, 32 and PZN-PT-BT 33 ceramics modified with ZnO. These results show that Zn 2+ ion can substitute an ion located on the B site of perovskite lattices of similar ionic radius, leading to an increase in ceramic's lattice parameters.…”

“…The decrease in γ observed in the ceramics modified with x ≤ 2.0 mol% is believed to be caused by the increase in the tetragonality. This is in agreement with the previous result that an increase in tetragonality could result in a decrease in γ of ceramics . For the ceramics with x > 2.0 mol%, the reduction in γ is attributed to the substitution of Zn 2+ ion for the Mg 2+ ion located on the B site of PMNT lattices.…”

“…This is in agreement with the previous result that an increase in tetragonality could result in a decrease in c of ceramics. 31 For the ceramics with x > 2.0 mol%, the reduction in c is attributed to the substitution of Zn 2+ ion for the Mg 2+ ion located on the B site of PMNT lattices. Compared with Mg 2+ ion, Zn 2+ ion possesses a 3d 10 electronic configuration, which favors covalent bonding with 2p 6 electrons of an oxygen ion when it occupies the octahedral site of the perovskite structure.…”

Characteristics and dielectric properties of (Pb0.97−La0.02Ba )(Zr0.72Sn0.22Ti0.06)O3 ceramics

“…However, the pyroelectric response encountered a problem that the Curie temperature is too high (>120°C) to be used practically and the range of the antiferroelectric is too narrow. In previous works, researchers reported that, for PZST ceramics, A-site modification with Ba 2+ could clearly shift the Curie temperature to low temperature [13][14][15][16][17][18][19][20]. Zhang et al [21] observed a change in isothermal entropy of more than 55 J/(kg K) and a change in adiabatic temperature of over 12°C.…”

Excellent piezoelectric properties of PNN‐PHT ceramics sintered at low temperature with CuO addition

“…Till date, copper (II) oxide (CuO), ZnO, Bi 2 O 3 , LiF, Li 2 CO 3 , LiBiO 2 , CuF 2 , etc. have been reported for reducing the sintering temperature …”