Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pinning in nonmagnetic borocarbides   The field dependences of the Labush parameter in nonmagnetic borocarbides are
measured by a method that does not require achieving a critical state. The
expected values of the critical current are estimated. The values obtained are
two order of magnitude greater than the results of "direct" measurements
performed on the basis of transport (magnetic) experiments. A giant peak
effect, which the collective pinning model describes quantitavely well, is
observed in the field dependences of the Labush parameter in Y-based
borocarbides.

21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph