Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Growth, magnetic properties and Raman scattering of La2NiMnO6 single
  crystals   Millimeter size single crystals of double perovskite La2NiMnO6 (LNMO) were
grown by the High Temperature Solution Growth Method. The magnetic measurements
and polarized Raman spectra between 5 and 350K provide evidence that the
crystals have high degree of Ni(2+)/Mn(4+)ordering, small amount of lattice
defects and highest Tc = 288K reported so far for ferromagnetic double
perovskites. At a microscopic level the crystals are heavily twinned and the
effect of twinning on the Raman spectra is analyzed in detail.

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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: astro-ph
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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: cs