Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ferroelectric nanodomains in epitaxial PbTiO3 films grown on SmScO3 and
  TbScO3 substrates   Domain structures of 320 nm thin epitaxial films of ferroelectric PbTiO3
grown by MOCVD technique in identical conditions on SmScO3 and TbScO3
perovskite sub- strates have been investigated by Raman spectroscopy and
piezoresponse force microscopy techniques. Phonon frequency shifts and typical
domain structure motifs are discussed. The results reveal strikingly different
domain structure architecture: domain structures of the PbTiO3 film grown on
SmScO3 have dominantly a-domain orientation while strongly preferential
c-domain orientation was found in the PbTiO3 film grown on the TbScO3
substrate. Differences between the two cases are traced back to the
film-substrate lattice mismatch at the deposition temperature.

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The categories of this paper are: supr-con
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The categories of this paper are: atom-ph
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The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
2
The categories of this paper are: math
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The categories of this paper are: math-ph
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The categories of this paper are: eess
6
The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
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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: plasm-ph
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The categories of this paper are: dg-ga