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Interactions of Ba2YCu3O6+x with SrTiO3 Substrate



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


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).
Powder Diffraction


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


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], (Accessed April 13, 2024)
Created February 12, 2011, Updated November 10, 2018