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Open AccessFeature PaperArticle

Preferred Orientation Contribution to the Anisotropic Normal State Resistivity in Superconducting Melt-Cast Processed Bi2Sr2CaCu2O8+δ

1
GREENMAT, CESAM Research Unit, Institute of Chemistry, University of Liege, Sart-Tilman, 4000 Liege, Belgium
2
Normandie Université, CRISMAT-ENSICAEN-UCN UMR 6508 CNRS, 6 Bd. Maréchal Juin, 14050 Caen, France
3
Nexans Superconductors, 30179 Hannover, Germany
4
Department of Industrial Engineering, University of Trento, via sommarive, 9-38123 Trento, Italy
5
Institut-Laue-Langevin, Bd. Jules Horowitz, 38042 Grenoble, France
*
Author to whom correspondence should be addressed.
Present Address: Deutsche Nanoschicht GmbH, Heisenbergstr. 16 Rheinbach, 53359 Rheinbach, Germany.
Academic Editor: Lorena Pardo
Materials 2017, 10(5), 534; https://doi.org/10.3390/ma10050534
Received: 7 April 2017 / Revised: 6 May 2017 / Accepted: 12 May 2017 / Published: 15 May 2017
(This article belongs to the Collection Textures and Anisotropy in Advanced Materials)
We describe how the contribution of crystallographic texture to the anisotropy of the resistivity of polycrystalline samples can be estimated by averaging over crystallographic orientations through a geometric mean approach. The calculation takes into account the orientation distribution refined from neutron diffraction data and literature values for the single crystal resistivity tensor. The example discussed here is a melt-cast processed Bi2Sr2CaCu2O8+δ (Bi-2212) polycrystalline tube in which the main texture component is a <010> fiber texture with relatively low texture strength. Experimentally-measured resistivities along the longitudinal, radial, and tangential directions of the Bi-2212 tube were compared to calculated values and found to be of the same order of magnitude. Calculations for this example and additional simulations for various texture strengths and single crystal resistivity anisotropies confirm that in the case of highly anisotropic phases such as Bi-2212, even low texture strengths have a significant effect on the anisotropy of the resistivity in polycrystalline samples. View Full-Text
Keywords: texture; neutron diffraction; superconductor; Bi2Sr2CaCuO8; anisotropy; resistivity texture; neutron diffraction; superconductor; Bi2Sr2CaCuO8; anisotropy; resistivity
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MDPI and ACS Style

Dellicour, A.; Vertruyen, B.; Rikel, M.O.; Lutterotti, L.; Pautrat, A.; Ouladdiaf, B.; Chateigner, D. Preferred Orientation Contribution to the Anisotropic Normal State Resistivity in Superconducting Melt-Cast Processed Bi2Sr2CaCu2O8+δ. Materials 2017, 10, 534.

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