A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Artificial pinning in thick YBCO films: Pinning potential and c-axis correlation
Tekijät: Crisan A, Mikheenko P, Sarkar A, Dang VS, Kechik MMA, Abell JS, Paturi P, Huhtinen H
Kustantaja: ELSEVIER SCIENCE BV
Julkaisuvuosi: 2010
Journal: Physica C: Superconductivity and its Applications
Tietokannassa oleva lehden nimi: PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
Lehden akronyymi: PHYSICA C
Numero sarjassa: 19
Vuosikerta: 470
Numero: 19
Aloitussivu: 840
Lopetussivu: 843
Sivujen määrä: 4
ISSN: 0921-4534
DOI: https://doi.org/10.1016/j.physc.2010.02.033
Tiivistelmä
We have introduced artificial pinning centres in thick (>1 mu m) YBCO films grown by Pulsed Laser Deposition using substrate decoration, quasi-multilayers, and target doping approaches. We have found that the frequency dependence of critical current density is consistent with a logarithmic dependence of pinning potential on current density. For most of materials used as nano-dots, artificially-induced pinning centres have a larger potential than natural ones. From angle-dependent in-field transport measurements and from Transmission Electron Microscopy we have found evidence of c-axis correlated pinning centres. (C) 2010 Elsevier B.V. All rights reserved.
We have introduced artificial pinning centres in thick (>1 mu m) YBCO films grown by Pulsed Laser Deposition using substrate decoration, quasi-multilayers, and target doping approaches. We have found that the frequency dependence of critical current density is consistent with a logarithmic dependence of pinning potential on current density. For most of materials used as nano-dots, artificially-induced pinning centres have a larger potential than natural ones. From angle-dependent in-field transport measurements and from Transmission Electron Microscopy we have found evidence of c-axis correlated pinning centres. (C) 2010 Elsevier B.V. All rights reserved.
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