Angular dependence of the critical current density and the temperature scaling of the flux pinning force in YBCO thin film

Autor:	Abella Bouaaddi, Mustapha Bghour, A. Taoufik, Youssef Ait Ahmed, Brahim Lmouden, Habiba El Hamidi, Ahmed Tirbiyine, Hassan Elouaddi, Abdelhalim Hafid
Rok vydání:	2018
Předmět:	010302 applied physics Flux pinning Materials science Condensed matter physics Field (physics) General Physics and Astronomy Flux 01 natural sciences Magnetic field Core (optical fiber) 0103 physical sciences Thin film 010306 general physics Single crystal Pinning force
Zdroj:	Chinese Journal of Physics. 56:754-759
ISSN:	0577-9073
DOI:	10.1016/j.cjph.2017.12.025
Popis:	In this paper, the critical current Jc(Θ) have been investigated as a function of magnetic-field angle Θ. Θ is the angle between the c-axis and the applied magnetic field direction. This investigation concerned three temperature values (60 K, 78 K and 81 K). The normalized pinning force fp versus the normalized magnetic field h was also studied (fp = Fp / Fpmax and h = H / Hmax). The Fp expression was determined based on the Kramer model. The studied sample was a single crystal of YBaCuO thin film deposited by the ablation laser method on the surface (100) of a SrTiO3 substrate. The results of this work show the existence of point core pinning of the normal centers in the low field regime and the occurrence of the flux creep in high field regime.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::36b429b1a9c451f454a439b27f1b66ca https://doi.org/10.1016/j.cjph.2017.12.025 Zobrazit plný text záznamu Full Text from ScienceDirect