The elastic strain of lead-free relaxor K0.5Na0.5NbO3–SrTiO3 ceramic system, induced by applied electric fields with amplitudes up to 40kV∕cm, has been investigated. The strain response, being similarly low (order of 10−5) as in the classical lead magnesium niobate relaxor, is shown to be of solely electrostrictive origin, as a pure quadratic relation holds between induced strain and electric polarization. The strain dependence on the SrTiO3 content is presented and discussed. Furthermore, electrostrictive coefficients are shown to be constant over a broad temperature range and, similar to dielectric properties, independent of electric-field cycles, which suggests possible applications of this translucent, high-dielectric constant, and environmental-friendly ceramic system.
Articles you may be interested inInfluence of rare-earth addition on dielectric properties and relaxor behavior of barium zirconium titanate thin films J. Appl. Phys. 107, 064105 (2010); 10.1063/1.3330753 Dielectric phase-transition and polarization studies in stepped and compositionally graded lead magnesium niobate-lead titanate relaxor thin films J. Appl. Phys. 98, 014105 (2005); 10.1063/1.1948526 Tunability and relaxor properties of ferroelectric barium stannate titanate ceramics Appl. Phys. Lett. 85, 5319 (2004); 10.1063/1.1829794 Dielectric relaxation behavior in barium stannate titanate ferroelectric ceramics with diffused phase transition
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.