Embedding of nanoparticles as flux pinning sites in superconducting samples

Research output: Contribution to journalArticle

Abstract

Crystallographic orientations of thin films and bulk, melt-textured YBa2Cu3Ox high-Tc superconductors with embedded Y2Ba4CuMOx (M = Nb, Zr, Ag) nanoparticles are studied by electron backscatter diffraction. The Y 2BaCuO5 particles exhibit no preferred orientation but have a strong negative influence on the matrix orientation. In contrast, the nanoparticles are not disturbing the texture of the YBCO matrix. For the bulk samples, depending on the preparation route, a different particle orientation with respect to the matrix is obtained. Untextured M-2411 nanoparticles are formed by solid state reaction during the melt process by adding oxides (Nb 2O5 or Y2O3) to the precursor powder. Pre-formed Y2Ba4CuMOx particles added to the precursor in the form of pre-reacted nanopowder, exhibit a dominant single orientation related to the surrounding YBCO matrix. In the case of thin films prepared using laser ablation with a bulk YBCO sample with embedded nanoparticles as a target, the nanoparticles are transferred into the thin film, but the transferred M-2411 particles are found to be randomly oriented. Nevertheless, these films exhibit increased flux pinning properties.

Original languageEnglish
Pages (from-to)4734-4737
Number of pages4
JournalThin Solid Films
Volume518
Issue number16
DOIs
Publication statusPublished - 2010 Jun 1
Externally publishedYes

Fingerprint

Flux pinning
flux pinning
embedding
Nanoparticles
nanoparticles
matrices
Thin films
thin films
Laser ablation
Solid state reactions
Electron diffraction
Powders
Oxides
Superconducting materials
laser ablation
textures
Textures
routes
solid state
preparation

Keywords

  • EBSD
  • Orientation
  • Twins
  • YBCO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Embedding of nanoparticles as flux pinning sites in superconducting samples. / Koblischka-Veneva, Anjela Dimitrova; Koblischka, Michael Rudolf; Schmauch, J.

In: Thin Solid Films, Vol. 518, No. 16, 01.06.2010, p. 4734-4737.

Research output: Contribution to journalArticle

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