Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two-step magnetic ordering into a canted state in ferrimagnetic
  monoclinic Mn$_3$As$_2$   We report the magnetic structure of room-temperature-stable, monoclinic
Mn$_3$As$_2$ at 3 K and 250 K using neutron powder diffraction measurements.
From magnetometry data, the Curie temperature of Mn$_3$As$_2$ was confirmed to
be around 270 K. Calorimetry analysis showed the presence of another transition
at 225 K. At 270 K, Mn$_3$As$_2$ undergoes a $k = 0$ ferrimagnetic ordering in
the magnetic space group $C2/m$ (#12.58) with Mn moments pointing along $b$.
Below 225 K, there is a canting of Mn moments in the $ac$ plane which produces
a multi-$k$ non-collinear magnetic structure in space group $C2/c$ (#15.85).
The components of Mn moments along $b$ follow $k=0$ ordering and the components
along $a$ and $c$ have $k = [0 0 \frac{1}{2}]$ propagation vector. The change
in the magnetic ground state with temperature provides a deeper insight into
the factors that govern magnetic ordering in Mn-As compounds.

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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: nucl-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc