Functional properties of Sr1-xGdxTiO3 ceramics synthesized by solid state reaction method

Abstract

Sr1-xGdxTiO3 (0.00 ≤ x ≤ 0.11) ceramics by the addition of Gd3+ on A-sites, were processed and fabricated through the conventional sintering method and optimised the sintering temperature at 1390 °C–1470 °C for 2 h. The experimentation shows that all ceramics are possessed by cubic structure, in which the increment of Gd3+ content, in terms of x, decreases the lattice parameters of the ceramics, as well as affects the grain size. Comparing the results to pure SrTiO3 (STO) compounds, the addition of Gd3+ lowers the mass loss, increased the conductivity as well as permittivity by decreasing the dielectric losses at lower frequencies. The x = 0.03 and 0.01 evidenced the maximum Seeback Coefficient, ∼281 μV K−1 at ∼370 K confirming the higher carrier concentration. Also, the magnetic properties as a function of Gd3+ ions doped with STO showed gradual improvement, showing maximum saturation with the maximum concentration of x.