Change in the Dielectric Properties of Normal and Relaxor Ferroelectric Ceramic Composites in BT-PZT and PMN-PZT Systems by an Uniaxial Compressive Stress

Abstract

Effects of an uniaxial compressive pre-stress on the dielectric properties of normal and relaxor ferroelectric ceramic composites in BT-PZT and PMN-PZT systems are investigated. The dielectric properties are observed under the compressive pre-stress levels up to 15 and 5 MPa for BT-PZT and PMN-PZT, respectively, using a uniaxial compressometer. Both the dielectric constant and the dielectric loss tangent of the BT-PZT ceramics increase significantly with increasing applied stress. Larger changes in the dielectric properties with the applied stress are observed in the PZT-rich compositions. For PMN-PZT ceramics, the dielectric constant of the PZT-rich compositions increases slightly, while that of the PMN-rich compositions decreases with increasing applied stress.On the other hand, changes in the dielectric loss tangent with stress are found to be compositional independent. The experimental results are explained with the domain wall motion and de-aging mechanisms from the application of the compressive pre-stress. More importantly, this study undoubtedly shows that the applied stress significantly influences the dielectric properties of both ceramic composite systems.

Structural, dielectric and piezoelectric studies of (1−x)PLSZNT–xBaTiO3 ceramics

“…It was reported that effect of PZT additions into BT ceramics (i.e. (1 − x)BT-xPZT) showed outstanding piezoelectric properties [14]. We observed a similar trend with BT additions into PLSZNT ceramic system, which exhibited excellent piezoelectric properties.…”

“…Our results also indicate that for 0.5BT addition to 0.5PLSZNT in the tetragonal symmetry [3] led to a remarkable grain growth increment. Moreover, the remarkable grain growth observed is probably due to the combination of distinctive grain growth behavior between two perovskites PLSZNT and BT [14][15][16]25]. Fig.…”

“…: +56 41 2203369; fax: +56 41 2739800. [4,5], PMN-BT [6], 0.9Pb (Zr 0.52 Ti 0.48 )O 3 -0.1BaTiO 3 [7], BT/8YSZ [8], (1 − x)BaTiO 3 -xBi 0.5 Na 0.5 TiO 3 [9], Ba(Nb 0.15 Zr 0.85 )O 3 (BNZ) and 0.9Ba (Nb 0.15 Zr 0.85 )O 3 + 0.1BaTiO 3 (BNZ + BT) [10], BaTi 1−x (Fe 0.5 Nb 0.5 ) x O 3 (BTFN) [11] and BT-PZT [12][13][14][15][16]. The influence of isovalent Sr 2+ in PZT ceramics has been investigated for their dielectric and piezoelectric studies [17].…”

Ferroelectric properties of Pb(Zr1/2Ti1/2)O3–Pb(Zn1/3Nb2/3)O3 ceramics under compressive stress

“…It is therefore important to determine the properties of these materials as a function of applied stress. Previous investigations on the stress-dependent dielectric and electrical properties of many ceramic systems, such as BT, PZT, PMN, PMN-PT, PZT-BT, and PMN-PZT have clearly emphasized the importance of the subject [6][7][8][9][10][11][12][13]. In this paper, the stress dependence of the ferroelectric properties of ceramics in PZT-PZN system is presented.…”

Study of diffuse phase transition and relaxor ferroelectric behavior of Ba0.97Bi0.02Ti0.9Zr0.05Nb0.04O3 ceramic

“…Despite, the discovery of many attractive properties in some perovskite structures including relaxor behavior in Pb(Mg 1/ 3 Nb 2/3 )O 3 -PbTiO 3 , 7,8 Pb(Mg 1/3 Nb 2/3 )O 3 Pb(Zr 0.52 Ti 0.48 )O 3 , 9 and Pb(Zn 1/3 Nb 2/3 )O 3 -PbTiO 3 , 10 they have net been put to application due to their volatility and toxicity. So many researchers have attempted to overcome this problem by doping BaTiO 3 in the A or/and B sites to become a relaxor.…”