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3032195 
Journal Article 
Enhanced temperature stability in Tb-doped (Ba0.99Ca0.01)(Ti0.98Zr0.02)O-3 lead free ceramics 
Gao, J; Li, Q; Liu, H; Shim, J; Yan, Q; Zhang, Y; Chu, X 
2015 
1 
Ceramics International
ISSN: 0272-8842
EISSN: 1873-3956 
41 
2 
2497-2501 
WOS:000348961400073 
Lead-free (Ba0.99Ca0.01)(Ti0.98Zr0.02)O-3 (BCZT)+x mol% Tb (x=0-0.6) ceramics were prepared using a solid-state reaction technique. Phase structure, dielectric constant, ferroelectricity and temperature-dependent piezoelectric coefficient were explored. With an increasing Tb content, the orthorhombic-tetragonal phase transition temperature (TO-T) shifted to lower temperature while its Curie temperature (T-c) remained at 130 degrees C. The temperature stability of piezoelectric coefficient (d(33)) could be enhanced from 30 to 120 degrees C in Tb-doped BCZT ceramics. A piezoelectric coefficient of d(33)=542 pm/V was obtained at x=0.2 with low temperature-dependent degradation from 30 to 120 degrees C. The results indicated that Tb-doped BCZT ceramics could be a promising candidate for commercial purposes. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved. 
Electrical properties; BCZT; Piezoelectric ceramics; Tb-doped; Temperature stability