Malmivirta, M. and Yao, L. D. and Inkinen, S. and Huhtinen, H. and Palonen, H. and Jha, R. and Awana, V. P. S. and Dijken, S. van and Paturi, P. (2015) The Angular Dependence of the Critical Current of BaCeO3 Doped YBa2Cu3O6+x Thin Films. IEEE Transactions on Applied Superconductivity, 25 (3). ISSN 1051-8223

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The angular dependencies of the critical current of BaCeO3 (BCO) doped YBa2Cu3O6+x (YBCO) thin films grown with pulsed laser deposition (PLD) on SrTiO3 (001) were systematically investigated. The BCO concentration in the YBCO matrix was varied between 0-8 wt.%. Transmission electron microscopy confirmed that the 4% BCO containing sample has point-like, partly agglomerated BCO particles with diameter of 2.5 nm. The dopant degrades the crystal quality of YBCO but improves its in-field current carrying performance especially at low temperatures. The BCO addition affects the angular dependence of the critical current by broadening the B parallel to ab-axis peak of YCBO but no c-axis peak is seen, which is contrary to BaZrO3 doped films made by PLD. Although the particles are point-like, it is found that a model featuring only isotropic pinning centers is not sufficient to describe the angular dependence of the samples where B parallel to ab-axis of YCBO.

Item Type: Article
Uncontrolled Keywords: Angular dependence of critical current, BaCeO3 doping, pulsed laser deposition (PLD), YBCO thin films
Subjects: Engineering > Electronics and Electrical Engineering
Applied Physics/Condensed Matter
Depositing User: Dr. Rajpal Walke
Date Deposited: 02 Dec 2016 08:01
Last Modified: 02 Dec 2016 08:01

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