Preferred Orientation Contribution to the Anisotropic Normal State Resistivity in Superconducting Melt-Cast Processed Bi2Sr2CaCu2O8+delta - Archive ouverte HAL
Article Dans Une Revue Materials Année : 2017

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

Résumé

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+delta (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
Fichier principal
Vignette du fichier
Materials_10_p534.pdf (2.3 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01691903 , version 1 (24-01-2018)

Identifiants

Citer

Aline Dellicour, Benedicte Vertruyen, Mark O. Rikel, Luca Lutterotti, Alain Pautrat, et al.. Preferred Orientation Contribution to the Anisotropic Normal State Resistivity in Superconducting Melt-Cast Processed Bi2Sr2CaCu2O8+delta. Materials, 2017, 10 (5), 12 p. ⟨10.3390/ma10050534⟩. ⟨hal-01691903⟩
54 Consultations
52 Téléchargements

Altmetric

Partager

More