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The effect of BaCeO3 dopant concentration on magnetically defined BiTT and Bc2 in YBa2Cu3O6+x thin films deposited on SrTiO3 substrates

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, , Citation H Huhtinen et al 2014 J. Phys.: Conf. Ser. 507 012020 DOI 10.1088/1742-6596/507/1/012020

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1 Wihuri Physical Laboratory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland

2 The National Doctoral Programme in Nanoscience (NGS-NANO), Turku, Finland

3 The Superconductivity Division, National Physical Laboratory (CSIR), New Delhi 110012, India

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1742-6596/507/1/012020

Abstract

The effect of BaCeO3 (BCO) dopant concentration on magnetically obtained irreversibility field Birr and upper critical field Bc2 is investigated in YBa2Cu3O6+x (YBCO) thin films prepared by pulsed laser deposition on SrTiO3 (001) substrates. The unchanged values of Birr and Bc2 are connected to the structural properties where BCO has been observed to form non-elongated and randomly distributed particles within the whole concentration range of 0 – 10 wt.%. This indicates a different type of flux pinning mechanism for BCO-doped YBCO than for the widely studied BaZrO3-doped YBCO where increased Birr and Bc2 values were observed.

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10.1088/1742-6596/507/1/012020