npsm 새물리 New Physics : Sae Mulli

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Research Paper

New Physics: Sae Mulli 2015; 65: 747-751

Published online August 31, 2015 https://doi.org/10.3938/NPSM.65.747

Copyright © New Physics: Sae Mulli.

Effects of Bi(Zn$_{2/3}$Ta$_{1/3}$)O$_{3}$-Substitution on the Ferroelectric and Piezoelectric Properties of BiFeO$_{3}$-BaTiO$_{3}$ Ceramics

Jin Su PARK1, Myang Hwan LEE1, Da Jeong KIM1, Myong-Ho KIM1, Tae Kwon SONG*1, Sung Jin HAN2, Won-Jeong KIM2, Dalhyun DO3

1 School of Materials Science and Engineering, Changwon National University, Changwon 641-773, Korea
2 Department of Physics, Changwon National University, Changwon 641-773, Korea
3 Department of Advanced Materials Engineering, Keimyung University, Daegu 704-701, Korea

Correspondence to:tksong@changwon.ac.kr

Received: April 20, 2015; Revised: June 7, 2015; Accepted: June 23, 2015

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Lead-free ceramics with compositions of (1-$x$)[0.67Bi$_{1.05}$FeO$_{3}$-0.33BaTiO$_{3}$]-$x$Bi(Zn$_{2/3}$Ta$_{1/3}$)O$_{3}$ ($x$ =0.00, 0.01, 0.02, 0.03, 0.04 and 0.05) [BF-BT-BZT$x$] were prepared through a conventional solid-state reaction method. The effects of BZT substitution on the crystal structural, microstructural, piezoelectric and electrical properties of the ceramics were investigated. The X-ray diffraction patterns showed that all ceramics were crystallized with the perovskite phase. The grain size decreased with increasing BZT content. For $x$ = 0.02, good ferroelectric and piezoelectric properties were observed: 2$P_{r}$ = 42 $\mu$C/cm$^{2}$ and 2$E_{c}$ = 55 kV/cm. The static- and the dynamic-piezoelectric constants were observed to be 130 pC/N and 290 pm/V, respectively.

Keywords: Piezoelectric, Ferroelectric, Lead-free, BiFeO$_{3}$, BaTiO$_{3}$

Figures

Fig. 1. (a) Bipolar strain vs. electric field (S-E) loops BF-BT-BZTx ceramics and (b) static piezoelectric constant (d33) and dynamic piezoelectric constant (d33*) of BF-BT-BZTx ceramics.

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