Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chemical Interaction and Electronic Structure in a Compositionally
  Complex Alloy: a Case Study by means of X-ray Absorption and X-ray
  Photoelectron Spectroscopy   Chemical interaction and changes in local electronic structure of Cr, Fe, Co,
Ni and Cu transition metals (TMs) upon formation of an
$Al_{8}Co_{17}Cr_{17}Cu_{8}Fe_{17}Ni_{33}$ compositionally complex alloy (CCA)
have been studied by X-ray absorption spectroscopy and X-ray photoelectron
spectroscopy. It was found that upon CCA formation, occupancy of the Cr, Co and
Ni 3d states changes and the maximum of the occupied and empty Ni 3d states
density shifts away from Fermi level ($E_f$) by 0.5 and 0.6 eV, respectively,
whereas the Cr 3d empty states maximum shifts towards $E_f$ by 0.3 eV, compared
to the corresponding pure metals. The absence of significant charge transfer
between the elements was established, pointing to the balancing of the 3d
states occupancy change by involvement of delocalized 4s and 4p states into the
charge redistribution. Despite the expected formation of strong Al-TMs covalent
bonds, the Al role in the transformation of the TMs 3d electronic states is
negligible. The work demonstrates a decisive role of Cr in the Ni local
electronic structure transformation and suggests formation of directional Ni-Cr
bonds with covalent character. These findings can be helpful for tuning
deformation properties and phase stability of the CCA.

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The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
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The categories of this paper are: hep-lat
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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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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: dg-ga
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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