Iranian Journal of Ceramic Science & Engineering
Volume 2, Issue 3 (12-2013)
2013, 2(3): 0-0 |
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Investigation of structural and electrical properties of Bi0.5(Na1-xKx)0.5TiO3-yBiFeO3 ceramic system. Iranian Journal of Ceramic Science & Engineering 2013; 2 (3)
URL: http://ijcse.ir/article-1-142-en.html
URL: http://ijcse.ir/article-1-142-en.html
Abstract: (11565 Views)
To develop lead free piezoelectric materials Bi0.5(Na1-xKx)0.5TiO3-yBiFeO3 (abbreviated as BNKTx-BFy, x=0.18, 0.20 and 0.22, y=0.03 and 0.07) ceramics were prepared by solid state synthetic method. The formation of a solid solution of BNKT with BF has proven to omit the impurity of bismuth ferrite and resulted in a pure perovskite phase. The room temperature ferroelectric and piezoelectric properties of these ceramics were studied. The morphotropic phase boundary (MPB) of Bi0.5(Na1-xKx)0.5TiO3 ceramics between rhombohedral and tetragonal exactly locates at x=0.20. Polarization versus electric field (P-E) hysteresis and relative dielectric constant ɛr studies show maximum remanent polarization Pr= 33µC/cm2and ɛr =5435, respectively. The depolarization temperature Td, the maximum temperature Tm and piezoelectric coefficient d33 were obtained at x=0.20 and y=0.03, 80 oC, 275 oC and 120 pC/N, respectively.
Type of Study: Research |
Subject:
Tile, Porcelain, Glaze, Pigment and Ink
Received: 2014/01/13 | Accepted: 2014/01/13
Received: 2014/01/13 | Accepted: 2014/01/13
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