Coexistence of superconductivity and superparamagnetism in Pb-Co electrodeposited nanowires

Alberto Riminucci; Walther Schwarzacher

doi:10.1007/s00339-017-0782-z

Coexistence of superconductivity and superparamagnetism in Pb-Co electrodeposited nanowires

Alberto Riminucci, Walther Schwarzacher

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Abstract

Pb-Co nanowires were electrodeposited in 100 nm nominal pore diameter polycarbonate membranes. Above the TC of Pb we modelled the behaviour of the wires with a Langevin function, obtaining a Co volume of (1.06±0.01)×10^-7 cm³ divided into clusters of ≈10 atoms in size. The magnetic response of the wires in the 3 K to 10 K interval, which comprises T_C, was modelled by adding spherical superconducting Pb grains to the Co clusters; the Pb grains were found to be (87±6) nm in diameter. The Co clusters were not interacting and were not magnetically screened by the superconducting Pb.

Original language	English
Article number	161
Number of pages	5
Journal	Applied Physics A: Materials Science and Processing
Volume	123
Early online date	10 Feb 2017
DOIs	https://doi.org/10.1007/s00339-017-0782-z
Publication status	Published - Mar 2017

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10.1007/s00339-017-0782-z

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title = "Coexistence of superconductivity and superparamagnetism in Pb-Co electrodeposited nanowires",

abstract = "Pb-Co nanowires were electrodeposited in 100 nm nominal pore diameter polycarbonate membranes. Above the TC of Pb we modelled the behaviour of the wires with a Langevin function, obtaining a Co volume of (1.06±0.01)×10-7 cm3 divided into clusters of ≈10 atoms in size. The magnetic response of the wires in the 3 K to 10 K interval, which comprises TC, was modelled by adding spherical superconducting Pb grains to the Co clusters; the Pb grains were found to be (87±6) nm in diameter. The Co clusters were not interacting and were not magnetically screened by the superconducting Pb.",

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AU - Riminucci, Alberto

AU - Schwarzacher, Walther

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N2 - Pb-Co nanowires were electrodeposited in 100 nm nominal pore diameter polycarbonate membranes. Above the TC of Pb we modelled the behaviour of the wires with a Langevin function, obtaining a Co volume of (1.06±0.01)×10-7 cm3 divided into clusters of ≈10 atoms in size. The magnetic response of the wires in the 3 K to 10 K interval, which comprises TC, was modelled by adding spherical superconducting Pb grains to the Co clusters; the Pb grains were found to be (87±6) nm in diameter. The Co clusters were not interacting and were not magnetically screened by the superconducting Pb.

AB - Pb-Co nanowires were electrodeposited in 100 nm nominal pore diameter polycarbonate membranes. Above the TC of Pb we modelled the behaviour of the wires with a Langevin function, obtaining a Co volume of (1.06±0.01)×10-7 cm3 divided into clusters of ≈10 atoms in size. The magnetic response of the wires in the 3 K to 10 K interval, which comprises TC, was modelled by adding spherical superconducting Pb grains to the Co clusters; the Pb grains were found to be (87±6) nm in diameter. The Co clusters were not interacting and were not magnetically screened by the superconducting Pb.

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DO - 10.1007/s00339-017-0782-z

M3 - Article (Academic Journal)

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JO - Applied Physics A: Materials Science and Processing

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SN - 0947-8396

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