Investigation of La-doped 0.25Pb(Zn1/3Nb2/3)O3-0.75Pb(ZrxTi1-x)O3 ceramics near morphotropic phase boundary

Abstract

La-doped 0.25Pb(Zn 1/3 Nb 2/3 )O 3 -0.75Pb(Zr x Ti 1-x ) O 3 (x00.51-0.57) ceramics were prepared by a conventional mixed oxide method. The piezoelectric and dielectric properties of various compositions near the morphotropic phase boundary (MPB) were investigated. The MPB was determined by X-ray diffraction (XRD) patterns. The optimal properties were obtained in the specimen with Zr/Ti0 53/47: d 33 0570 pC/N, k p 00.60, ε r 03900, tgδ01.9%, T c 0 204°C, P r 035.21 μC/cm 2 , E c 011.62 kV/cm, which means it is a good candidate for applications.

Review of Research on the Rare-Earth Doped Piezoelectric Materials

“…One the other hand, the rare-earth doped piezoelectric materials can get characteristic emission spectrum after being FIGURE 3 | The properties of some piezoelectric ceramics with rare-earth doping (Pandey et al, 2009;Peng et al, 2010a;Yao et al, 2010;Wang et al, 2012;Hao et al, 2015;Peng et al, 2016;Guo et al, 2019a;Guo et al, 2019b).…”

Opto-electrical Behavior of Pb(Zn1/3Nb2/3)O3–Pb0.97La0.03(Zr,Ti)O3 Transparent Ceramics with Varying Defect Structure

“…In Figure 5, the Raman modes R h , R 1 and E (2TO 2 ) correspond to the R3m structure (rhombohedral), modes A 1 (1TO), A 1 (3LO), E(4LO), A 1 (3TO), E(4TO) and E (2TO 1 ) appear due to P4mm (tetragonal) structure, and modes E(2LO), A 1 (2TO) and Silent (E þ B 1 ) are caused by both R3m and P4mm structures. Clearly, the sample consists of a MPB phase with rhombohedral and tetragonal structure and a total of 12 Raman modes (He et al 2009;Fan and Kim 2002;Wang et al 2012;La-Orauttapong et al 2002;Rahman, Metselaar, and Karmaker 2014;Pandey and Singh 2014). These samples were further investigated as a function of temperature.…”

“…Both PZN and PZT exhibit perovskite (ABO 3 ) lattice structure in which the A-site is occupied by Pb 2 þ ions and the B-site by Zn 2 þ , Zr 4 þ , Ti 4 þ and Nb 5 þ ions (Nonnenmann, Gallo, and Spanier 2010;Ryu et al 2011). The solid solution of PZN-PZT has a rhombohedral/tetragonal morphotropic phase boundary (MPB) at or above ≥ 70 mol% PbZr x Ti 1−x O 3 (0.52 ≤ x ≤ 0.54) (He et al 2009;Fan and Kim 2002;Wang et al 2012). Monoclinic phases such as P m and C m have been reported to exist around the MPB, acting as an intermediate bridging phase that allows polarization to rotate from [111] to [001] (Ahart et al 2008;La-Orauttapong et al 2002;Rahman, Metselaar, and Karmaker 2014;Pandey and Singh 2014;Chou 2003, 2006).…”

Large and Stable Shape Memory Effect Realized by Defect Dipoles in Acceptor‐Doped Ferroelectric Ceramics

“…Among the piezoelectric materials, Pb(Zr 1− x Ti x )O 3 (PZT) ceramics have dominated the applications because of their high piezoelectric performance . It is reportedly known that the strain level of the PZT ceramics with respect to the external driving electric field is around 0.1%–0.42%, and this strain level cannot be hold after removing the driving field . It is believed that the electric field‐induced strain of PZT ceramics results from both intrinsic lattice deformation and extrinsic non‐180° domain reversal.…”

“…1,2 It is reportedly known that the strain level of the PZT ceramics with respect to the external driving electric field is around 0.1%-0.42%, and this strain level cannot be hold after removing the driving field. [4][5][6][7] It is believed that the electric field-induced strain of PZT ceramics results from both intrinsic lattice deformation and extrinsic non-180°domain reversal. Furthermore, electric field-induced phase transition and electrostrictive effect should also be considered in some specially cases.…”