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Vortex Pinning in Nanostructured Novel Superconductors


Babić, Emil; Galić, Stipe; Jerčinović, Marko; Kušević, Ivica; Novosel, Nikolina; Pajić, Damir; Zadro, Krešo
Vortex Pinning in Nanostructured Novel Superconductors // Journal of superconductivity and novel magnetism, 30 (2017), 3; 743-747 doi:10.1007/s10948-016-3649-1 (međunarodna recenzija, članak, znanstveni)


Naslov
Vortex Pinning in Nanostructured Novel Superconductors

Autori
Babić, Emil ; Galić, Stipe ; Jerčinović, Marko ; Kušević, Ivica ; Novosel, Nikolina ; Pajić, Damir ; Zadro, Krešo

Izvornik
Journal of superconductivity and novel magnetism (1557-1939) 30 (2017), 3; 743-747

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Superconductors, Vortex pinning, MgB2

Sažetak
The influence of magnetic nanoadditives (MN) on electromagnetic properties of MgB2 wires is compared with the effects of nonmagnetic nanoadditives (NN) in bulk MgB2 and with irradiation effects in HTc tapes. Both coated (carbon, silica, or dextrin shell) and uncoated MN were used in order to assess the effects of co-doping and interparticle interaction. Transport and magnetic measurements were used in order to determine connectivity, characteristic fields (Birr, Bc2), and Jc of all wires. Light doping (≤3wt%) enhances Jc and/or Birr for all types of MN, and indicates contribution of magnetic pinning. The enhancement of Jc by the best MN is comparable to that for best NN. In both MN and NN doped MgB2, matching effects in vortex pinning appear causing a maximum enhancement of Birr at higher temperatures, but sizable enhancement persists to the lowest temperatures. Matching effects also appear in irradiated HTc tapes, but with enhancement of Birr limited to vicinity of matching field only. The advantage of enhanced Birr at all temperatures in doped MgB2 wires is practically annulled by poor connectivity.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Ustanove
Institut za fiziku, Zagreb,
Institut "Ruđer Bošković", Zagreb,
INSTITUT IGH, d.d.,
Prirodoslovno-matematički fakultet, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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