Effects of laser-induced periodic surface structures on the superconducting properties of Niobium

Cubero, A. (Universidad de Zaragoza) ; Martínez, E. (Universidad de Zaragoza) ; Angurel, L. A. (Universidad de Zaragoza) ; de la Fuente, G. F. (Universidad de Zaragoza) ; Navarro, R. ; Legall, H. ; Krüger, J. ; Bonse, J.

Resumen: It is well known that the use of ultrashort (fs) pulsed lasers can induce the generation of (quasi-) periodic nanostructures (LIPSS, ripples) on the surface of many materials. Such nanostructures have also been observed in sample''s surfaces irradiated with UV lasers with a pulse duration of 300 ps. In this work, we compare the characteristics of these nanostructures on 1-mm and on 25-µm thick niobium sheets induced by 30 fs n-IR and 300 ps UV pulsed lasers. In addition to conventional continuous or burst mode processing configurations, two-dimensional laser beam and line scanning modes have been investigated in this work. The latter allows the processing of large areas with a more uniform distribution of nanostructures at the surface. The influence of the generated nanostructures on the superconducting properties of niobium has also been explored. For this aim, magnetic hysteresis loops have been measured at different cryogenic temperatures to analyse how these laser treatments affect the flux pinning behaviour and, in consequence, the superconductor''s critical current values. It was observed that laser treatments are able to modify the superconducting properties of niobium samples. © 2019 The Author(s)

Idioma: Inglés

DOI: 10.1016/j.apsusc.2019.145140

Año: 2020

Publicado en: Applied Surface Science 508 (2020), 145140 [7 pp]
ISSN: 0169-4332

Factor impacto JCR: 6.707 (2020)

Categ. JCR: CHEMISTRY, PHYSICAL rank: 37 / 162 = 0.228 (2020) - Q1 - T1
Categ. JCR: PHYSICS, CONDENSED MATTER rank: 16 / 69 = 0.232 (2020) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 30 / 160 = 0.188 (2020) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, COATINGS & FILMS rank: 1 / 21 = 0.048 (2020) - Q1 - T1

Factor impacto SCIMAGO: 1.294 - Chemistry (miscellaneous) (Q1) - Condensed Matter Physics (Q1) - Surfaces, Coatings and Films (Q1) - Surfaces and Interfaces (Q1) - Physics and Astronomy (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/T54-17R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/ENE2017-83669-C4-1-R

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)