Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quasi Static Remanence in Dzyaloshinskii-Moriya Interaction driven Weak
  Ferromagnets and Piezomagnets   We explore remanent magnetization ($\mu$) as a function of time and
temperature, in a variety of rhombohedral antiferromagnets (AFM) which are also
weak ferromagnets (WFM) and piezomagnets (PzM). These measurements, across
samples with length scales ranging from nano to bulk, firmly establish the
presence of a remanence that is quasi static in nature and exhibits a
counter-intuitive magnetic field dependence. These observations unravel an
ultra-slow magnetization relaxation phenomenon related to this quasi static
remanence. This feature is also observed in a defect free single crystal of
$\alpha$-Fe$_2$O$_3$, which is a canonical WFM and PzM. Notably,
$\alpha$-Fe$_2$O$_3$ is not a typical geometrically frustrated AFM and in
single crystal form, it is also devoid of any size or interface effects, which
are the usual suspects for a slow magnetization relaxation phenomenon. The
underlying pinning mechanism appears exclusive to those AFM which are either
symmetry allowed WFM, driven by Dzyaloshinskii-Moriya Interaction (DMI) or can
generate this trait by tuning of size and interface. The qualitative features
of the quasi static remanence indicate that such WFM are potential
piezomagnets, in which magnetization can be tuned by \textit{stress} alone.

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The categories of this paper are: hep-th
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
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The categories of this paper are: stat
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The categories of this paper are: q-bio
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The categories of this paper are: math
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The categories of this paper are: physics
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: acc-phys
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The categories of this paper are: cs