Structure-property relations of co-doped bismuth layer-structured Bi(3.25)La(0.75)(Ti(1-x)Mo(x))(3)O(12 )ceramics

In this work, the fabrication and investigation of substituting higher-valence Mo(6+ )for Ti(4+ )ion on the B-site of La(3+)-doped Bi(4)Ti(3)O(12 )[BLT] structure to form Bi(3.25)La(0.75)(Ti(1-x)Mo(x))(3)O(12 )[BLTM] (when x = 0, 0.01, 0.03, 0.05 0.07, 0.09, and 0.10) ceramics were carried out. X-ray diffraction patterns of BLTM ceramics indicated an orthorhombic structure with lattice distortion, especially with a higher concentration of a MoO(3 )dopant. Microstructural investigation showed that all ceramics composed mainly of plate-like grains. An increase in MoO(3 )doping content increased the length and thickness of the grain but reduced the density of the ceramics. Electrical conductivity was found to decrease, while the dielectric constant increased with Mo(6+ )doping concentration. Ferroelectric properties were found to be improved with increasing MoO(3 )content and were optimized at x = 0.1.