Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the magnetic phase diagram of a sigma-phase Fe47Re53 compound in the
  H-T plane   Sigma-phase Fe47Re53 compound was investigated by means of in-field DC and AC
magnetization measurements. Field cooled, MFC, and zero-field cooled, MZFC, DC
magnetization curves were recorded in the magnetic field, H, up to 1000 Oe. AC
magnetization measurements were performed at the constant frequency of 1465 Hz
in the field up to H=500 Oe. Both types of measurements gave evidence in favor
of a re-entrant character of magnetism in the studied sample. Based on
characteristic temperatures determined from the measurements magnetic phase
diagrams have been outlined in the H-T plane. The diagrams are similar but not
identical. The main difference is that in the diagram constructed based on the
DC data there is an intermediate antiferromagnetic-like phase which is absent
in the AC diagram. Furthermore, the border lines (irreversibility, cross-over
and Curie temperature) follow the power law but with correspondingly different
exponents. The studied sample was also characterized by determining the effect
of H on the degree of irreversibility and that of frustration.

3
The categories of this paper are: physics
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas