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Interactions of Ba2YCu3O6+x with SrTiO3 Substrate

Published

Author(s)

Winnie K. Wong-Ng, Zhi Yang, James A. Kaduk, Lawrence P. Cook, Shailee P. Diwanji, Christopher E. Lucas

Abstract

This paper describes the crystal chemistry and crystallography of products of the interaction of Ba2YCu3O6+x with the SrTiO3 buffer, which is a model system for coated conductors. A systematic study of the chemical interactions of Ba2YCu3O6+y and SrTiO3 was conducted under two processing conditions: purified air (21% pO2), and 100 Pa pO2 (0.1% pO2). The compounds determined based on the reactions of the bulk Ba2YCu3O6+x and SrTiO3 include (Ba,Sr)YTi2O8.5, (Ba,Sr)2YCu3O6+x, (Ba,Sr)TiO3, (Ba,Sr)2TiO4, and CuO. The crystal structures of (Ba,Sr)RTi2O8.5 (R=lanthanides), (Ba,Sr)TiO3, (Ba,Sr)2TiO4, which have been previously reported, are reviewed. Detailed description of the (Ba, Sr)2RCu3O6+x (R=Pr, Nd, Sm, Eu, Gd, Dy, Ho, and Er) structure, as determined using x-ray Rietveld refinements, is given. Reference patterns of selected reaction products have been prepared and submitted to the Powder Diffraction File (PDF).
Citation
Powder Diffraction
Volume
471

Keywords

coated conductor, Ba2YCu3O6+x, SrTiO3 buffer, chemical interaction

Citation

Wong-Ng, W. , Yang, Z. , Kaduk, J. , Cook, L. , Diwanji, S. and Lucas, C. (2011), Interactions of Ba2YCu3O6+x with SrTiO3 Substrate, Powder Diffraction, [online], https://doi.org/10.1016/j.physc.2011.02.005 (Accessed April 13, 2024)
Created February 12, 2011, Updated November 10, 2018