Systematic study of structure and piezoelectric properties of Pb(Ni_1/3Nb_2/3)O₃‐PbTiO₃ by in situ synchrotron diffraction

Abstract

Lead-based ferroelectric materials are extensively employed in industrial applications and everyday life due to their excellent ferroelectric and piezoelectric performance. Pb(Ni 1/3 Nb 2/3)O 3-PbTiO 3 (PNN-PT) is a typical binary relaxor ferroelectric system, whose refined structure and piezoelectric properties have not been systematically investigated. In this study, evolution of electric field-based crystal structure and variation of ferroelectric, piezoelectric, as well as dielectric properties with composition and temperature of (1 − x)PNN-xPT (0.32 ≤ x ≤ 0.36) ceramics were studied in full detail. The optimal performance is obtained at 0.66PNN-0.34PT with maximum piezoelectric coefficient d 33 of 560 pC/N and large dielectric constant of 28 684. In situ high-energy synchrotron diffraction was employed to determine structural origins of enhanced properties of 0.66PNN-0.34PT. Interestingly, crystal structure of poled 0.66PNN-0.34PT ceramic is determined to be single monoclinic phase. Furthermore, both its lattice parameters and volume variation present butterfly shape under electric field. It is demonstrated that macroscopic strain of 0.66PNN-0.34PT stems mainly from intrinsic structure. The present study provides evidence for the relationship between microstructure and macroscopic properties, which is beneficial to the design of new materials with piezoelectric properties.

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 room-temperature dielectric constant, the maximum dielectric constant, and the T m parameters in the MPB composition (x = 0.14) are found to be 6315, 26811, and 109 °C, respectively. Notably, the T m value of 0.52PNN-0.14PSN-0.34PT is much higher than that of 0.66PNN-0.34PT (71 °C), 30 thus indicating the possibility of improving the temperature stability of the ceramics by combining the two different binary systems. 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).…”

“…This is a typical feature of relaxor ferroelectrics, which has also been observed in the PNN-PT system. 19,20,30 The coercive field (E C ) of the samples gradually decreases from the tetragonal to the rhombohedral phase (Figure 4a). The high energy barrier makes domain switching difficult in the tetragonal structure, thus resulting in a large coercive field.…”

Structural evolution of a high-temperature piezoelectric Pb(In1/2Nb1/2)O3–PbTiO3 ceramic under an in situ electric field

“…[1][2][3][4] For example, various ternary systems with high piezoelectricity (d 33 4 600 pC N À1 ) have been developed based on the Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 (PMN-PT) [5][6][7][8] and Pb(Ni 1/3 Nb 2/3 )O 3 -PbTiO 3 (PNN-PT) binary relaxor ferroelectrics. [9][10][11][12][13][14] However, due to the relatively low Curie temperature (T C ) of PMN-PT and PNN-PT, the temperature stability of the corresponding constructed ternary systems is reduced, which limits their application at elevated temperatures. [5][6][7][8][9][10][11][12] In contrast, the T C of the Pb(In 1/2 Nb 1/2 ) O 3 -PbTiO 3 (PIN-PT) binary relaxor ferroelectric is higher than 250 1C, making it highly promising for constructing hightemperature piezoelectric systems.…”

A synergistic approach to attain high piezoelectricity in a Pb(Ni, Nb)O3–Pb(Lu, Nb)O3–PbTiO3 system

“…4,5 Recently, there has been a strong appetite in exploiting superior performance perovskite systems on the basis of the Pb(Ni, Nb)O 3 -PbTiO 3 (PNN-PT) and Pb(Mg, Nb) O 3 -PbTiO 3 (PMN-PT) piezoelectrics. [6][7][8][9][10][11][12][13][14][15][16] For instance, ultrahigh However, most binary or multiple systems still exhibit mediocre piezoelectricity and also do not exhibit significant advantage in the application of precision and sensitivity of piezoelectric devices. Therefore, the development of excellent piezoelectric ceramics is bound to better meet the increasing demand for modern electronic equipment for high-performance piezoelectrics.…”

“…4,5 Recently, there has been a strong appetite in exploiting superior performance perovskite systems on the basis of the Pb(Ni, Nb)O 3 –PbTiO 3 (PNN–PT) and Pb(Mg, Nb)O 3 –PbTiO 3 (PMN–PT) piezoelectrics. 6–16 For instance, ultrahigh d 33 values have been rendered by Pb(Ni, Nb)O 3 –Pb(Mg, Nb)O 3 –PbTiO 3 12 (PNN–PMN–PT, d 33 = 780 pC N −1 ) and Pb(Ni, Nb)O 3 –Pb(Zr, Ti)O 3 15 (PNN–PZ–PT, d 33 = 1070 pC N −1 ) systems. However, most binary or multiple systems still exhibit mediocre piezoelectricity and also do not exhibit significant advantage in the application of precision and sensitivity of piezoelectric devices.…”