Investigation of structural and electrical properties of Gd3+ ions modified BaZr0.05Ti0.95O3 ceramic
- 74 Downloads
Gadolinium (Gd) doped BaZr0.05Ti0.95O3 ceramic samples with general formula Ba(1−x)Gd2x/3Zr0.05Ti0.95O3 were prepared by the solid state reaction method. The effect of Gd on the structural and dielectric behaviours of BaZr0.05Ti0.95O3 have been studied in detail. X-ray diffraction studies revealed that site substitution by Gd3+ ions had a great impact on the site occupancy of the BaZr0.05Ti0.95O3 pervoskite. The lattice parameters increased up to x = 0.03 followed by a decrease at higher concentration showing both donor and acceptor behaviours of Gd in BaZr0.05Ti0.95O3 matrix. Structural changes were studied by Raman spectroscopy also, which showed the non-linear shifting of the modes with increasing doping concentration. The scanning electron microscopy images showed a drastic modification in grain size with increasing Gd concentration. The effect of substitution of Gd3+ ions in BaZr0.05Ti0.95O3 was investigated by means of dielectric studies and the dielectric behaviour was explained using self-compensation model. The diffusivity in the samples was studied by modified Curie–Weiss law.
- 4.M.K. Mahata, T. Koppe, T. Mondal, C. Brüsewitz, K. Kumar, V.K. Rai, H. Hofsäss, U. Vetter, Incorporation of Zn2+ ions into BaTiO3:Er3+/Yb3+ nanophosphor: an effective way to enhance upconversion, defect luminescence and temperature sensing. Phys. Chem. Chem. Phys. 17, 20741–20753 (2015)CrossRefGoogle Scholar
- 10.H. Ikushima, S. Hayakawa, Nat. Tech. Rep. 13, 209–216 (1967)Google Scholar
- 30.S. Parida, S.K. Rout, L.S. Cavalcante, A.Z. Simões, P.K. Barhai, N.C. Batista, E. Longo, M. Siu Li, S.K. Sharma, Structural investigation and improvement of photoluminescence properties in Ba(ZrxTi1–x)O3 powders synthesized by the solid state reaction method. Mater. Chem. Phys 142, 70–76 (2013)CrossRefGoogle Scholar