Physics – Condensed Matter – Superconductivity
Scientific paper
2010-10-29
Appl. Phys. Lett. 97, 172507 (2010)
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1063/1.3509418
The implementation of an Fe buffer layer is a promising way to obtain epitaxial growth of Co-doped BaFe2As2 (Ba-122). However, the crystalline quality and the superconducting properties of Co-doped Ba-122 are influenced by the Fe buffer layer thickness, dFe. The well-textured growth of the Fe/Ba-122 bilayer with dFe = 15 nm results in a high Jc of 0.45 MAcm$^{-2}$ at 12 K in self-field, whereas a low Jc value of 61000 Acm$^{-2}$ is recorded for the bilayer with dFe = 4 nm at the corresponding reduced temperature due to the presence of grain boundaries.
Haenishc J.
Haindl Silvia
Heller Rainer
Holzapfel Bernhard
Huehne Ruben
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