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
Author :
Rubio-Marcos, F. ; Marchet, P. ; Romero, J.J. ; Fernandez, J.F.
Author_Institution :
Lab. de Sci. des Procades Ceramiques et de Traitements de Surface, Univ. de Limoges, Limoges, France
fDate :
9/1/2011 12:00:00 AM
Abstract :
This article reviews on the use of Raman spectroscopy for the study of (K,Na,Li)(Nb,Ta,Sb)O3 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 A1g 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.
Keywords :
Raman spectra; X-ray diffraction; crystal structure; dielectric polarisation; ferroelectric ceramics; ferroelectricity; lithium compounds; piezoceramics; piezoelectricity; potassium compounds; reviews; sodium compounds; stoichiometry; (KNaLi)(NbTaSb)O3; PZT piezoelectric materials; Raman spectroscopy; X-ray diffraction; XRD; crystalline structure; ferroelectric properties; lead-free piezoceramics; piezoelectric coefficients; piezoelectric properties; remnant polarization; stoichiometries; structural properties; tetragonality; wavenumber; Ceramics; Correlation; Powders; Raman scattering; Temperature measurement; X-ray diffraction;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2011.2020