Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lattice Models for Magnetic Fluids: Correlations Between Order
  Parameters   Magnetic fluids are colloidal suspensions of ferromagnetic particles covered
with a surfactant layer, dispersed in a host liquid. The existence of
cooperative phenomena in such magnetic colloidal systems, makes the determining
of their physical properties a difficult task. In the framework of statistical
mechanics, taking into consideration interparticle interactions, the study of
equilibrium properties and phase transitions of magnetic fluids can be best
done. In this paper we analyze some basic aspects about the real possibility of
describing the critical properties of these systems in the language of spin-1
lattice-gas model and we also propose the use of a higher spin (3/2) model.

33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys