Physics – Condensed Matter – Superconductivity
Scientific paper
2011-03-30
Appl. Phys. Lett. 98 (2011) 242510
Physics
Condensed Matter
Superconductivity
Published in Appl. Phys. Lett
Scientific paper
10.1063/1.3599844
High critical current densities (Jc) > 1 MA/cm2 were realized in cobalt-doped BaFe2As2 (BaFe2As2:Co) films on flexible metal substrates with biaxially-textured MgO base-layers fabricated by an ion-beam assisted deposition technique. The BaFe2As2:Co films showed small in-plane crystalline misorientations (delta fai BaFe2As2:Co) of ~3o regardless of doubly larger misorientaions of the MgO base-layers (delta fai MgO = 7.3o), and exhibited high self-field Jc up to 3.5 MA/cm2 at 2 K. These values are comparable to that on MgO single crystals and the highest Jc among iron pnictide superconducting tapes and wires ever reported. High in-field Jc suggests the existence of c-axis correlated vortex pinning centers.
Hiramatsu Hidenori
Hosono Hideo
Ishimaru Yoshihiro
Kamiya Toshio
Katase Takayoshi
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