Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gigantic magnetic field polarization and magnetoelectric coupling in a
  ferrimagnetic oxide CaBaCo4O7   The single crystal study of CaBaCo4O7, a non collinear ferrimagnet (TC=64K),
with a polar orthorhombic space group (Pbn21) between 4 K and 293 K, shows the
appearance below TC of a large electric polarization along its c axis, reaching
17mC.m-2 at 10K. At 62.5K, a magnetic field driven giant variation of
polarization, P(9T)-P(0T)=8mC.m-2, is observed. Moreover, the present
magnetoelectric measurements, are fully consistent with the m'm2' magnetic
point group, strongly supporting that this oxide is also ferrotoroidic. This
ferrimagnetic oxide, which belongs to the '114' structural family, opens an
avenue for the search of new magnetoelectrics.

33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
2
The categories of this paper are: math
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int