Piezoelectric Properties of Solid-Solution (Bi_1-x(PbBa)_x)(Ni_(1-x)/2Ti_(1+x)/2)O₃Ceramics

Abstract

The dielectric, ferroelectric, piezoelectric and mechanical properties of a new solid solution, (1- x)·Bi(Ni0.5Ti0.5)O3- x·(Pb a Ba b )TiO3 (a+b=1) ( NTPB[100 x-100 a/100 b]), as a new group of piezoelectric ceramics, are studied. NTPB[0-100 a/100 b] (BINT) is a mixture of a bismuth layered structure consisting of Bi4Ti3O12, NiO and Bi2O3. When x is increased, the crystal structure changes from a mixture of bismuth layered and perovskite structures to a single phase of the perovskite structure at about x=0.2, being independent of the ratio of PbTiO3 (PT) to BaTiO3 (BT). The electromechanical coupling factors k 33, k t and k P of NTPB[40-100/0]+Mn(0.02 wt%) are about 51%, 47% and 32%, respectively. The mechanical bending strength of NTPB[44.5-100/0]+Mn(0.02 wt%) is about 150 MPa.

Properties of Na_1/2Bi_1/2TiO₃ Ceramic Prepared by Sol-Gel Method

“…(NaBi) 1/2 TiO 3 shows strong ferroelectric properties and has the Curis temperature of T c = 320°C, remnant polarization of P r = 38 µC/cm 2 and Coercive field of E c = 73 kV/cm at room temperature. So BNT-based ceramics are considered to be excellent candidates as key materials of lead-free piezoelectric ceramics [2][3][4][5]. In the paper, the properties of Na 1/2 Bi 1/2 TiO 3 ceramic prepared by sol-gel method were studied.…”

Resistivity Enhancement and Transport Mechanisms in (1 − x)BaTiO3–xBi(Zn1/2Ti1/2)O3 and (1 − x)SrTiO3–xBi(Zn1/2Ti1/2)O3

“…Efforts have been made to engineer stable dielectric properties over a wider temperature range through modification of the phase transition to mitigate its characteristic sharp phase transition at the Curie point ( T c ) . Among these approaches, the Bi‐containing end‐member perovskites have attracted special attention in recent years . The similar electronic structure of Bi and Pb and the solid solution of Bi‐based perovskites with Pb‐based systems were the main motivation behind the widespread investigation of these perovskites .…”

“…4,6 Among these approaches, the Bi-containing endmember perovskites have attracted special attention in recent years. [7][8][9] The similar electronic structure of Bi and Pb and the solid solution of Bi-based perovskites with Pbbased systems were the main motivation behind the widespread investigation of these perovskites. 10,11 Solid solutions of BT with unstable Bi-perovskites have been shown to introduce relaxor behavior in them.…”

“…10,11 Solid solutions of BT with unstable Bi-perovskites have been shown to introduce relaxor behavior in them. 8,9 Previous research has established the potential of Bi-based perovskites for high temperature and other applications. [12][13][14][15][16][17][18][19] This article is based on one of these solid solutions developed by Cann et al with Bi(Zn 1/2 Ti 1/2 )O 3 (BZT) as one of the end members in the solid solution.…”

“…The similar electronic structure of Bi and Pb and the solid solution of Bi‐based perovskites with Pb‐based systems were the main motivation behind the widespread investigation of these perovskites . Solid solutions of BT with unstable Bi‐perovskites have been shown to introduce relaxor behavior in them . Previous research has established the potential of Bi‐based perovskites for high temperature and other applications .…”