Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A study of the physical properties of single crystalline Fe5B2P   Single crystals of Fe5B2P were grown by self-flux growth technique.
Structural and magnetic properties are studied. The Curie temperature of Fe5B2P
is determined to be 655$pm$2K. The saturation magnetization is determined to be
1.72 MuB/Fe at 2K. The temperature variation of the anisotropy constant K1 is
determined for the first time, reaching ~0.50 MJ/m3 at 2K, and it is comparable
to that of hard ferrites. The saturation magnetization is found to be larger
than the hard ferrites. The first principle calculations of saturation
magnetization and anisotropy constant are found to be consistent with the
experimental results.

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The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs