Crystallographic orientation of Y2Ba4CuMOx (M=Nb, Zr, Ag) nanoparticles embedded in bulk, melt-textured YBCO studied by EBSD

Anjela Dimitrova Koblischka-Veneva, F. Mücklich, Michael Rudolf Koblischka, N. Hari Babu, D. A. Cardwell

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2582-2588
Number of pages7
JournalJournal of the American Ceramic Society
Volume90
Issue number8
DOIs
Publication statusPublished - 2007 Aug 1
Externally publishedYes

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Nanoparticles
Solid state reactions
Electron diffraction
Powders
Oxides
Textures

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

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title = "Crystallographic orientation of Y2Ba4CuMOx (M=Nb, Zr, Ag) nanoparticles embedded in bulk, melt-textured YBCO studied by EBSD",
abstract = "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.",
author = "Koblischka-Veneva, {Anjela Dimitrova} and F. M{\"u}cklich and Koblischka, {Michael Rudolf} and {Hari Babu}, N. and Cardwell, {D. A.}",
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AU - Koblischka-Veneva, Anjela Dimitrova

AU - Mücklich, F.

AU - Koblischka, Michael Rudolf

AU - Hari Babu, N.

AU - Cardwell, D. A.

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AB - 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.

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