Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Critical Scaling of the Magnetization and Magnetostriction in the Weak
  Itinerant Ferromagnet UIr   The weak itinerant ferromagnet UIr is studied by magnetization and
magnetostriction measurements. Critical behavior, which surprisingly extends up
to several Tesla, is observed at the Curie temperature $T_C\simeq45$ K and is
analyzed using Arrott and Maxwell relations. Critical exponents are found that
do not match with any of the well-known universality classes. The
low-temperature magnetization $M_s\simeq0.5$ $\mu_B \cong const.$ below 3 T
rises towards higher fields and converges asymptotically around 50 T with the
magnetization at $T_C$. From the magnetostriction and magnetization data, we
extract the uniaxial pressure dependences of $T_C$, using a new method
presented here, and of $M_s$. These results should serve as a basis for
understanding spin fluctuations in anisotropic itinerant ferromagnets.

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The categories of this paper are: nlin
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: stat
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The categories of this paper are: econ
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The categories of this paper are: eess
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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The categories of this paper are: physics
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The categories of this paper are: hep-ph
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The categories of this paper are: math
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The categories of this paper are: gr-qc