Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 37, Issue 4, Pages 1411-1419Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2016.11.028
Keywords
Lead-free piezoceramics; Phase structure; Piezoelectric properties; CuO
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Funding
- Specialized Research Fund for the Doctoral Program of Higher Education [20130006110006]
- National Natural Science Foundation of China [51472026, 51332002]
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High piezoelectricity was achieved in Ba(Ti0.90Sno.(10))O-3 lead-free ceramics by optimizing CuO addition and sintering temperature. The phase structure of 1.0 mol% CuO-doped Ba(Ti-0.90 Sn-o.10 )O-3 ceramic is coexisting rhombohedral and tetragonal phases as sintered at 1300 degrees C. The coexistence of rhombohedral, tetragonal and orthorhombic phases appears in 1.0 mol% CuO-doped Ba(Ti0.10Sn0.10)O-3 ceramics as sintered at 1350-1450 degrees C, which leads to highly enhanced d(33) up to 650pC/N. This work demonstrates that high piezoelectric property (d33 = 650pC/N) can be obtained in BaTiO3-based lead-free piezoceramics with a simple composition modification by modulating phase structures, which also indicates that Ba(Ti,Sn)O-3 is a promising candidate to replace the lead-based piezoceramics. (C) 2016 Elsevier Ltd. All rights reserved.
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