Importance of the crystalline symmetry in the piezoelectric properties of (K0.44+xNa0.52Li0.04)(Nb0.86Ta0.10Sb0.04)O3+x/2 lead-free ceramics

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dc.creatorRubio-Marcos, F.
dc.creatorMarchet, P.
dc.creatorMerle-Mejean, T.
dc.creatorFernandez, J. F.
dc.date2008-08-01
dc.date.accessioned2026-07-07T09:54:16Z
dc.date.available2026-07-07T09:54:16Z
dc.descriptionLead-free ceramics (K0.44+xNa0.52Li0.04)(Nb0.86Ta0.10Sb0.04)O3+x/2 (x=-0,06) were prepared by conventional solid state sintering. The results indicate a correlation between crystalline symmetry and electrical properties. Higher tetragonality was observed in samples with higher piezoelectric response. As the tetragonality increase the presence of polymorphic phase decrease associated with a reduction of the relaxor behaviour response. The ceramics with c/a = 1.011 ratio exhibit enhanced electrical properties. The Raman spectroscopy showed a certain asymmetry in the paraelectric phase above the Curie temperature Tc that provokes retention of the polarization. The crystalline symmetry plays a crucial role in the piezoelectric properties of the system.
dc.description14 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0808.0115
dc.identifierhttp://arxiv.org/abs/0808.0115
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/166250
dc.subjectMaterials Science
dc.subjectOther Condensed Matter
dc.titleImportance of the crystalline symmetry in the piezoelectric properties of (K0.44+xNa0.52Li0.04)(Nb0.86Ta0.10Sb0.04)O3+x/2 lead-free ceramics
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