Crystallographic Orientation of Y2Ba4CuMOx (M=Nb, Zr, Ag) Nanoparticles Embedded in Bulk, Melt-Textured YBCO Studied by EBSD

Crystallographic orientations of Y–Ba–Cu–O (YBCO) and embedded Y2Ba4CuMOx (M=Nb, Zr, Ag) nanoparticles in bulk, melt‐textured YBCO samples are studied by electron backscatter diffraction. Y2BaCuO5 particles exhibit no preferred orientation but have a strong negative influence on the matrix orientati...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2007-08, Vol.90 (8), p.2582-2588
Main Authors: Koblischka-Veneva, A., Mücklich, F., Koblischka, M. R., Hari Babu, N., Cardwell, D. A.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Cermets, ceramic and refractory composites
Chemical industry and chemicals
Cross-disciplinary physics: materials science
rheology
Electrotechnical and electronic ceramics
Exact sciences and technology
Materials science
Other materials
Physics
Specific materials
Technical ceramics
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Summary:Crystallographic orientations of Y–Ba–Cu–O (YBCO) and embedded Y2Ba4CuMOx (M=Nb, Zr, Ag) nanoparticles in bulk, melt‐textured YBCO samples are studied by electron backscatter diffraction. Y2BaCuO5 particles exhibit no preferred orientation but have a strong negative influence on the matrix orientation. In contrast, the nanoparticles do not disturb the texture of the YBCO matrix. Depending on the preparation route, a different particle orientation with respect to the matrix is obtained. Untextured nanoparticles are formed by solid‐state reaction during the melt process by adding oxides (Nb2O5 or Y2O3) to the precursor powder. Preformed Y2Ba4CuMOx particles added to the precursor in the form of prereacted nanopowder exhibit a dominant single orientation related to the surrounding YBCO matrix.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2007.01771.x