Iron-based superconductors are an interesting class of materials that have attracted significant interest during the last years, and which could be employed in a variety of potential applications due to their high upper critical field Hc2. In order to exploit the properties of these materials for practical applications, in this paper we explore two different routes for the fabrication of polycrystalline samples belonging to 11-family. In particular, the influence of dedicated heat treatments has been investigated to optimize their overall superconducting properties. Then, we compared the pinning properties of these two types of samples to correlate the fabrication process with the pinning landscape. The final aim is to obtain an increased Tc and Hc2, as well as an enhanced pinning efficacy, which could lead to higher critical current density Jc relevant for practical uses. © 2017 IEEE.

Fabrication and Physical Properties of Polycrystalline Iron-Chalcogenides Superconductors

Della Corte, A.;Vannozzi, A.;De Marzi, G.;Fiamozzi Zignani, C.
2017

Abstract

Iron-based superconductors are an interesting class of materials that have attracted significant interest during the last years, and which could be employed in a variety of potential applications due to their high upper critical field Hc2. In order to exploit the properties of these materials for practical applications, in this paper we explore two different routes for the fabrication of polycrystalline samples belonging to 11-family. In particular, the influence of dedicated heat treatments has been investigated to optimize their overall superconducting properties. Then, we compared the pinning properties of these two types of samples to correlate the fabrication process with the pinning landscape. The final aim is to obtain an increased Tc and Hc2, as well as an enhanced pinning efficacy, which could lead to higher critical current density Jc relevant for practical uses. © 2017 IEEE.
superconducting materials;Critical current and flux pinning;hysteresis;magnetoresistance
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12079/1780
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
social impact