title: Correlation between the structure and the piezoelectric properties of lead-free (K,Na,Li)(Nb,Ta,Sb)O3 ceramics studied by XRD and Raman spectroscopy.
abstract: This article reviews on the use of Raman spectroscopy for the study of (K,Na,Li)(Nb,Ta,Sb)O(3) lead-free piezoceramics. Currently, this material appears to be one of the most interesting and promising alternatives to the well-known PZT piezoelectric materials. In this work, we prepare piezoceramics with different stoichiometries and study their structural, ferroelectric, and piezoelectric properties. By using both Raman spectroscopy and X-ray diffraction, we establish a direct correlation between the structure and the properties. The results demonstrate that the wavenumber of the A(1g) vibration is proportional to the tetragonality, the remnant polarization, and the piezoelectric coefficients of these materials. Thus, Raman spectroscopy appears as a very useful technique for a fast evaluation of the crystalline structure and the ferroelectric/ piezoelectric properties.
authors.affiliation: Laboratoire de Science des Procédés Céramiques et de Traitements de Surface, UMR 6638 Centre National de la Recherche Scientifique, Université de Limoges, Limoges, France. fernando.rubio-marcos@unilim.fr
authors.forename: Fernando
authors.initials: F
authors.lastname: Rubio-Marcos
authors.forename: Pascal
authors.initials: P
authors.lastname: Marchet
authors.forename: Juan José
authors.initials: JJ
authors.lastname: Romero
authors.forename: Jose F
authors.initials: JF
authors.lastname: Fernández