Synthesis of Gd-Doped Ceria Films from (Ce, Gd)-EDTA Solutions via Atmospheric Sintering

Volume 7 Issue 2 July - September 2019

Research Paper

Synthesis of Gd-Doped Ceria Films from (Ce, Gd)-EDTA Solutions via Atmospheric Sintering

Keiji Komatsu*, Tsuyoshi Kikuta**, Atsushi Nakamura***, Hidetoshi Saitoh****

*_*** Department of Materials Science and Technology, Nagaoka University of Technology, Nagaoka, Niigata, Japan.

Komatsu, K., Kikuta, T., Nakamura, A., and Saitoh, H. (2019). Synthesis of Gd-Doped Ceria Films from (Ce, Gd)-EDTA Solutions via Atmospheric Sintering. i-manager’s Journal on Material Science, 7(2), 1-19.

Abstract

Gd-doped ceria (GDC) films were synthesized on Si substrates from (Ce, Gd)-EDTA solutions and atmospheric sintering. The (Ce, Gd)-EDTA solutions were coated onto silicon by a commercial spin coater and the coated samples were sintered in a furnace at 850 ℃ for 1 h. For the composition of Ce:Gd=0.8:0.2 in the EDTA complex with sintering at 850 ℃, only the crystalline phases of Ce0.8Gd0.2O1.9 were synthesised on the Si substrates. Microstructures of the Ce0.8Gd0.2O1.9 films had 78% 3D-relative densities as revealed by ellipsometry. Furthermore, the oxidation degree of the Ce ion was equal in the obtained Ce0.8Gd0.2O films at various experimental conditions as confirmed by XPS analysis.