Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Specific heat investigation of the magnetic ordering in two frustrated
  spin-chain oxides: Ca3Co2O6 and Ca3CoRhO6   Specific heat measurements were carried out on the closely related spin-chain
oxides Ca3Co2O6 and Ca3CoRhO6. Both compounds consist of Ising magnetic chains
that are arranged on a triangular lattice. The spin coupling along and between
the chains are ferromagnetic and antiferromagnetic, respectively. Geometrical
frustration is expected from the combination of these magnetic features. The
present study reports that the specific heat data of these compounds exhibit
similarities in the spin-freezing process at low T, whereas striking
differences exist in the antiferromagnetic interchain ordering at higher T.
These results are discussed in connection with previous magnetization and
neutron diffraction data.

2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph