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

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 fro...

Full description

Saved in:
Bibliographic Details
Published in:Materials 2017-05, Vol.10 (5), p.534
Main Authors: Dellicour, Aline, Vertruyen, Benedicte, Rikel, Mark, Lutterotti, Luca, Pautrat, Alain, Ouladdiaf, Bachir, Chateigner, Daniel
Format: Article
Language:English
Subjects:
Anisotropy
Bi2Sr2CaCuO8
Bismuth
Chemistry
Chimie
Condensed Matter
Crystallography
Deformation
Diffraction
Electrical resistivity
Materials Science
Mathematical analysis
Neutron diffraction
Phases
Physical, chemical, mathematical & earth Sciences
Physics
Physique, chimie, mathématiques & sciences de la terre
Preferred orientation
resistivity
Simulation
Single crystals
Strength
Superconductivity
superconductor
Surface layers
Texture
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 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.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma10050534