TY - JOUR
T1 - Superconducting nanowire fiber mats and the paramagnetic Meissner effect
AU - Koblischka, M. R.
AU - Koblischka-Veneva, Anjela Dimitrova
AU - Pessoa, A. L.
AU - Carvalho, C. L.
AU - Zadorosny, R.
N1 - Funding Information:
We acknowledge the assistance of X. L. Zeng, T. Karwoth (Saarland University, Saarbrücken, Germany), Q. Nouailhetas (GREEN, Nancy, France), T. Hauet (IJL Nancy, France) in some of the magnetic measurements. This work is part of the SUPERFOAM international project funded by ANR and DFG under the references ANR-17-CE05-0030 and DFG-ANR Ko2323-10, respectively. ALP and RZ thank the Brazilian agencies São Paulo Research Foundation (FAPESP, Grant 2016/12390-6), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001, and National Council of Scientific and Technological Development (CNPq, grant 302564/2018-7).
Publisher Copyright:
© 2021 Elsevier Ltd. All rights reserved.
PY - 2021
Y1 - 2021
N2 - Superconducting nanowire fiber mats of Bi2Sr2CaCu2O8, YBa2Cu3O7 and GdBa2Cu3O7 were fabricated using electrospinning and solution blow-spinning. Fiber mats consisting of individual nanowires with long lengths (∼100 μm) and diameters between 150 and 500 nm were obtained. Magnetic properties of the samples were measured by SQUID magnetometry. Having studied a large number of such samples, we find that only the YBCO fiber mats exhibit the paramagnetic Meissner effect (PME), whereas the other materials do not. To explain these observations, we regard the current flow through the nanowires, the distinctly different current densities and the vortex dimensionality at temperatures close to Tc.
AB - Superconducting nanowire fiber mats of Bi2Sr2CaCu2O8, YBa2Cu3O7 and GdBa2Cu3O7 were fabricated using electrospinning and solution blow-spinning. Fiber mats consisting of individual nanowires with long lengths (∼100 μm) and diameters between 150 and 500 nm were obtained. Magnetic properties of the samples were measured by SQUID magnetometry. Having studied a large number of such samples, we find that only the YBCO fiber mats exhibit the paramagnetic Meissner effect (PME), whereas the other materials do not. To explain these observations, we regard the current flow through the nanowires, the distinctly different current densities and the vortex dimensionality at temperatures close to Tc.
KW - Current flow
KW - Fiber mats
KW - HTSc
KW - Nanowires
KW - PME
KW - Spinning
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U2 - 10.1016/j.matpr.2021.10.244
DO - 10.1016/j.matpr.2021.10.244
M3 - Conference article
AN - SCOPUS:85127557729
SN - 2214-7853
VL - 54
SP - 91
EP - 94
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
T2 - 2020 International Conferences and Exhibition on Nanotechnologies, Organic Electronics Nanomedicine, NANOTEXNOLOGY 2020
Y2 - 4 July 2020 through 11 July 2020
ER -