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Microstructure and Fluctuation-Induced Conductivity Analysis of Bi2Sr2CaCu2O8+Î ́ (Bi-2212) Nanowire Fabrics by Koblischka, Michael Rudolf; Koblischka-Veneva, Anjela; Zeng, XianLin; Hannachi, Essia; Slimani, Yassine is a Materials Science article available to read on EtoBox.
What is Microstructure and Fluctuation-Induced Conductivity Analysis of Bi2Sr2CaCu2O8+Î ́ (Bi-2212) Nanowire Fabrics about?
Resistance measurements were performed on Bi2Sr2CaCu2O8+δ (Bi-2212) fabric-like nanowire networks or nanofiber mats in the temperature interval 3 K ≤T≤ 300 K. The nanowire fabrics were prepared by means of electrospinning, and consist of long (up to 100 μm) individual nanowires with a mean diameter of 250 nm. The microstructure of the nanowire network fiber mats and of the individual nanowires was thoroughly characterized by electron microscopy showing that the nanowires can be as thin as a single Bi-2212 grain. The polycrystalline nanowires are found to have a texture in the direction of the original polymer nanowire. The overall structure of the nanofiber mats is characterized by numerous interconnects among the nanowires, which enable current flow across the whole sample. The fluctuation-induced conductivity (excess conductivity) above the superconducting transition temperature, Tc, was analyzed using the Aslamzov-Larkin model. Four distinct fluctuation regimes (short-wave, two-dimensional, three-dimensional and critical fluctuation regimes) could be identified in the Bi-2212 nanowire fabric samples. These regimes in such nanowire network samples are discussed in detail for the
Who reads Microstructure and Fluctuation-Induced Conductivity Analysis of Bi2Sr2CaCu2O8+Î ́ (Bi-2212) Nanowire Fabrics?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Koblischka, Michael Rudolf; Koblischka-Veneva, Anjela; Zeng, XianLin; Hannachi, Essia; Slimani, Yassine
- Publisher
- MDPI AG; Multidisciplinary Digital Publishing Institute (MDPI); Basel: MDPI AG, 2011- (ISSN 2073-4352)
- Published
- 2020
- Language
- EN
- Field
- Materials Science (Physical Sciences)