Lead-free piezoelectric ceramics in the (1 − x)Sr2NaNb5O15–xCa2NaNb5O15 (0.05 ≤ x ≤ 0.35) system†
Abstract
The study investigating the electrical properties of dense lead-free piezoelectric ceramics in the (1 −
x)Sr2NaNb5O15–xCa2NaNb5O15
(SCNN) system with x ranging from 0.05 to 0.35 is reported here. X-Ray diffraction patterns all showed a single tetragonal tungsten bronze phase, peak broadening being seen on increasing the Ca content. The lattice constant calculation indicated distortion and shrinkage of the crystal structure with Ca substitution.