Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structural and magnetic behavior of Cr$_2$Co$_{(1-x)}$Cr$_x$Al inverse
  Heusler alloys   We report the structural and magnetic behavior of single phase inverse
Heusler alloys Cr$_2$Co$_{(1-x)}$Cr$_x$Al ($x = $ 0, 0.2, 0.4) using x-ray
diffraction (XRD), Raman spectroscopy, isothermal magnetization, and magnetic
susceptibility measurements. Interestingly, the Rietveld refinement of XRD data
with the space group I$\bar{4}m2$ reveal a tetragonal distortion with c/a ratio
around 1.38 in these inverse Heusler structures. The bulk compositions have
been confirmed by energy dispersive x-ray spectroscopy measurements. The active
Raman mode F$_{2g}$ is observed at 320~cm$^{-1}$, which confirms the X-type
Heusler structure as the A2 and B2 type structures are known to be not Raman
active. The area of F$_{2g}$ mode decreases with Cr concentration, which
indicate the origin of this mode due to Co vibrations. The isothermal
magnetization data confirm the magnetic moment close to zero ($\le$0.02
$\mu_B/f.u.$) at $\approx$70~kOe and negligible coercive field suggest the
fully compensated ferrimagnetic nature of these samples. The susceptibility
behavior indicates irreversibility between zero-field and field-cooled curves
and complex magnetic interactions at low temperatures.

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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
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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: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: nlin
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The categories of this paper are: math-ph