Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective uniaxial anisotropy in easy-plane materials through
  nanostructuring   Permanent magnet materials require a high uniaxial magneto-crystalline
anisotropy. Exchange coupling between small crystallites with easy-plane
anisotropy induces an effective uniaxial anisotropy if arranged accordingly.
Nanostructuring of materials with easy-plane anisotropy is an alternative way
to create hard-magnetic materials. The coercivity increases with decreasing
feature size. The resulting coercive field is about 12 percent of the
anisotropy field for a crystal size of 3.4 times the Bloch parameter.

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The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
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The categories of this paper are: q-alg
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: plasm-ph
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The categories of this paper are: alg-geom
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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: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: econ
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The categories of this paper are: hep-ph
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The categories of this paper are: adap-org
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The categories of this paper are: gr-qc