Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Resistivity testing of palladium dilution limits in CoPd alloys for
  hydrogen storage   Palladium satisfies most of the requirements for an effective hydrogen
storage material with two major drawbacks: it has a relatively low gravimetric
hydrogen density and is prohibitively expensive for large-scale applications.
Pd-based alloys should be considered as possible alternatives to a pure Pd. The
question is how much one can dilute the Pd concentration in a variety of
candidate materials while preserving hydrogen absorption capability. We
demonstrate that the resistivity measurements of thin-film alloy samples can be
used for a qualitative high-throughput screening and study of the
hydrogen-absorbing properties over the entire range of palladium
concentrations. Contrary to palladium-rich alloys where additional hydrogen
scattering indicates a degree of hydrogen content, the diluted alloy films
respond by a decrease of resistance due to their thickness expansion. Evidence
of significant hydrogen absorption was found in thin CoPd films diluted to just
20% of Pd.

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The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
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The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
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The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat