Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extraordinary magnetization behavior of single crystalline
  TbFe_4.4Al_7.6   We report the observation of a field-induced transformation from the
easy-plane antiferromagnetic structure to the easy-axis ferrimagnetic structure
in a single crystal of TbFe_4.4Al_7.6 (tetragonal ThMn_12 structure) at 5 K.
Such a field-induced, irreversible transition has been identified for the first
time. This transition is accompanied by a giant orthorhombic distortion:
epsilon_aa = - epsilon_bb ~ 3.5x10^-4 that is associated with a magnetic
hardness (mu_0H_C ~ 3 T) that is unprecedented in this category of materials.

15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con