Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetism in La$_{0.7}$Sr$_{0.3}$Mn$_{1-x}$Co$_x$O$_3$ ($0 \leq x \leq
  1$)   We study the structural and magnetic properties of
La$_{0.7}$Sr$_{0.3}$Mn$_{1-x}$Co$_x$O$_3$ ($0 \leq x \leq 1$). Rietveld
refinement of X-ray Diffraction (XRD) pattern suggests phase purity of the
polycrystalline samples with R$\bar{3}$c space group. Interplay of
Ferromagnetic (FM) and Antiferromagnetic (AFM) interaction upon Co substitution
at Mn site in La$_{0.7}$Sr$_{0.3}$MnO$_3$ is evident from magnetic
measurements. There is an optimal cobalt substitution at which the coercive
field is maximum.

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The categories of this paper are: nucl-th
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The categories of this paper are: hep-th
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The categories of this paper are: eess
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The categories of this paper are: math-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
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The categories of this paper are: bayes-an
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: chem-ph