Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/15764
Title: Phase transition-induced high electromechanical activity in [(K0.5Na0.5)1-xLix](Nb0.8Ta0.2)O3 lead-free ceramic system
Authors: Feng, Z
Or, SW 
Keywords: Electromechanical activity
Lead-free ceramics
Morphotropic phase boundary (MPB)
Phase transition
Issue Date: 2009
Publisher: Elsevier
Source: Journal of alloys and compounds, 2009, v. 480, no. 2, p. l5-l8 How to cite?
Journal: Journal of alloys and compounds 
Abstract: A high electromechanical activity is observed in the [(K0.5Na0.5)1-xLix](Nb0.8Ta0.2)O3 (x = 0, 0.02, and 0.03) lead-free ceramic system at and around the orthorhombic (O)-tetragonal (T) phase transition temperature (TO-T). This activity is found to originate from an O-T phase transition region at ambient temperature rather than a classical morphotropic phase boundary (MPB) region intrinsic in the Pb(Zr1-xTix)O3 (PZT) lead-based ceramic system. Li modification enables a large decrease in TO-T instead of constituting a classical MPB. In contrast to the nearly temperature-independent classical MPB behavior in the PZT system, the strong temperature-dependent phase transition behavior in the system may impose a challenge to temperature demanding applications.
URI: http://hdl.handle.net/10397/15764
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2009.01.111
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