Changes in dielectric properties of Pb(In_1/2Nb_1/2)O₃-PbTiO₃ceramics under compressive stress applied parallel and perpendicular to an electric field

Abstract

The influences of compressive stress on the dielectric properties of (1 − x)Pb(In1/2Nb1/2)O3–xPbTiO3 (x = 0.1–0.5) ceramics was investigated in this study. The dielectric properties were measured under compressive stress applied parallel and perpendicular to electric field. The results clearly showed that the superimposed compression stress had pronounced effects on the dielectric properties of PIN–PT ceramics. In general, with increasing compressive stress the dielectric constant of the ceramics increased and decreased when the stress was applied parallel and perpendicular, respectively, to the electric field direction. The dielectric loss tangent, however, decreased in both stress cases. The observations were mainly interpreted in terms of competing influences of the domain switching through non-180° domain walls, clamping of domain walls, de-ageing and the stress-induced decrease in the switchable part of spontaneous polarization.

Dielectric Properties of Pb(Zr1/2Ti1/2)O3-Pb(Zn1/3Nb2/3)O3Ceramics Under Compressive Stress Applied Perpendicular to Electric Field

“…The changes in the dielectric loss tangent are, on the other hand, opposite to those of the parallel stress case. For the case of the compressive stress applied perpendicular to the direction of the electric field, only few previous experimental works have been carried out on some commercial hard and soft PZT ceramics, PIN-PT and PMN-PT ceramics [17,18,24,26,33,34]. Interestingly, the results observed in this present study are generally very similar to those obtained earlier in the Pb-based perovskite ceramics mentioned above.…”

“…0.9PZT-0.1PZN, 0.8PZT-0.2PZN, and 0.7PZT-0.3PZN, is attributed to more available domain states in the compositions [6][7][8], hence much larger change is observed. Similar mechanism has been reported for other ferroelectric systems [19,25,26].…”

“…Therefore, the competing influences between the domain clamping and de-aging mechanisms can be a cause of a rather complex dielectric loss response to the applied stress, which depends both on the compositions and the magnitude of the applied stress. Interestingly, this type of competing mechanisms has also been reported for other ferroelectric systems [19,25,26].…”

“…Our recent investigations also showed that the electrical properties of the PZT-PZN ceramics changed significantly with increasing compressive stress applied parallel to electric field direction, with the magnitude of the changes depending greatly on the ceramic compositions [22,23]. Recently, many investigations also reported interesting changes of electrical properties of many ferroelectric ceramics under the influences of the compressive stress applied perpendicular to the electric field [15,17,[24][25][26][27][28]. Therefore, it is the aim of this study to examine the dielectric properties of the PZT-PZN ceramics under the compressive stress applied perpendicular to electric field.…”

Changes in the dielectric properties of Pb(Zr1/2Ti1/2)O3–Pb(Co1/3Nb2/3)O3ceramics under compressive stress applied perpendicularly to the electric field

“…Our recent investigation showed that the dielectric constant of PZT-PCN ceramics increased significantly with increasing compressive stress applied parallel to the electric field direction, while the dielectric loss tangent showed an opposing trend [23]. Recently, many investigations also reported changes in the electrical properties of ferroelectric ceramics under compressive stress applied perpendicularly to the electric field [16,18,[24][25][26][27][28]. Therefore, it is the aim of this study to examine the dielectric properties of PZT-PCN ceramics under such compressive stress.…”