Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low Microwave Surface Resistance in NdBa2Cu3O7-d Films Grown by
  Molecular Beam Epitaxy   We report the growth of NdBa2Cu3O7-d films on (100) MgO substrate by
Molecular Beam Epitaxy (MBE). Large area NdBa2Cu3O7-d films with homogeneous
superconducting properties were grown by precise control of stoichiometry and
the optimisation of growth parameters. The stoichiometric ratio of Nd:Ba:Cu
close to 1:2:3 yields films with TC of 94 K and JC values above 3.5 MA/cm2 at
77 K on bare MgO substrate. The NdBa2Cu3O7-d films grown under optimised
conditions had excellent in-plane texture and good metallicity. The most
significant characteristic of our MBE grown NdBa2Cu3O7-d films is the very low
microwave surface resistance values at all temperature range compared to its
YBa2Cu3O7-d counterpart with typical value of ~870 micro-ohm at 77 K & 22 GHz.
Our results on the MBE grown NdBa2Cu3O7-d films suggests that NdBa2Cu3O7-d is a
superior choice for the realisation of commercial microwave applications.

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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
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The categories of this paper are: q-bio
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The categories of this paper are: econ
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: quant-ph
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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
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The categories of this paper are: math-ph