Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Biaxially textured cobalt-doped BaFe2As2 films with high critical
  current density over 1 MA/cm2 on MgO-buffered metal-tape flexible substrates   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.

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The categories of this paper are: patt-sol
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The categories of this paper are: ao-sci
1
The categories of this paper are: cs
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
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The categories of this paper are: stat
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
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The categories of this paper are: econ
3
The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org