Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Field-Temperature Evolution of Antiferromagnetic Phases in Ludvigites
  Ni3-xMnxBO5   The conditions for the flux growth of new Mn-Ni oxyborates with the ludwigite
structure are reported. Magnetic measurement data for the samples with nickel
and manganese predominance are presented. Diamagnetic anomalies of the
antiferromagnetic phases are established and analyzed in the framework of a
model comprising two antiferromagnetically interacting subsystems, each being
antiferromagnetically ordered.

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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
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The categories of this paper are: hep-th
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The categories of this paper are: physics
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The categories of this paper are: nucl-th
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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: 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-bio
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-ex