Influenced of Fe buffer thickness on the crystalline quality and the transport properties of Fe/Ba(Fe1-xCox)2As2 bilayers

Abstract

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.

References in corpus (4)

• Small anisotropy, weak thermal fluctuations, and high field superconductivity in Co-doped iron pnictide Ba(Fe1-xCox)2As2
• Strong Tc dependence for strained, epitaxial Ba(Fe1-xCox)2As2 thin films
• Scaling behaviour of the critical current in clean epitaxial Ba(Fe1-xCox)2As2 thin films
• Coherent interfacial bonding on the FeAs tetrahedron in Fe/Ba(Fe(1-x)Co(x))2As2 bilayers

Cited by in corpus (7)

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• Intrinsic pinning and the critical current scaling of clean epitaxial Fe(Se,Te) thin films
• Influence of substrate type on transport properties of superconducting FeSe0.5Te0.5 thin films
• Critical factor for epitaxial growth of cobalt-doped BaFe2As2 films by pulsed laser deposition
• Bicrystalline Grain Boundary and Hybrid SNS Junctions Based on Ba-122 Thin Films
• Pressure effects on the superconducting thin film Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$