Enhanced piezoelectric properties of BaZrO3-substituted 0.67BiFeO3-0.33BaTiO3 lead-free ceramics

• Published in: Journal of the Korean Physical Society Vol. 66; no. 7; pp. 1106 - 1109
• Main Authors: Park, J. S., Lee, M. H., Kim, D. J., Kim, M-H., Song, T. K., Kim, S. W., Kim, W-J., Kumar, S.
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Physical Society 01.04.2015; 한국물리학회
• Subjects: Mathematical and Computational Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Theoretical; 물리학; Ferroelectric; BiFeO; BaTiO; Piezoelectric; Lead-free
• ISSN: 0374-4884; 1976-8524
• DOI: 10.3938/jkps.66.1106

Lead-free ceramics with compositions of (1− x )[0.67Bi 1.05 FeO 3 -0.33BaTiO 3 ]- x BaZrO 3 ( x = 0.00, 0.01, 0.02, 0.03, 0.04, and 0.05) [BF-BT-BZ x ] have been prepared through a conventional solid-state reaction method. The effects of BZ substitution on the crystal structural, microstructural, piezoelectric, and electrical properties of the ceramics were investigated. The X-ray diffraction patterns revealed that all ceramics were formed with a mixed structure of rhombohedral and tetragonal perovskite phases. For x = 0.03, good ferroelectric and piezoelectric properties were observed: 2 P r = 43 μ C/cm 2 and 2 E c = 61 kV/cm. The static- and dynamic-piezoelectric constants were observed to be 52 pC/N and 330 pm/V, respectively.