Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effect of mesoscopic inhomogeneities on the critical current of bulk
  melt-textured YBCO   The downsizing 211-inclusions and an increase of their density leads to rise
in mean critical current value in Y-based melt textured material. Very often
211-inclusion are spread in the material volume non-homogeneous, with typical
scale 50 - 100 micrometer. Therefore it is difficult to find the real
correlation between local critical current and the inclusions distribution. We
performed a study of a local critical current using modified magneto-optic
technique on a melt-textured YBaCuO ceramic, found the areas with constant
current and studied the real structure of the material in the areas, inclusions
distribution and their sizes, by scanning electron microscopy and X-ray
microanalysis. The estimation of a pinning in these places, by taking into
account the amount of inclusions and the length of their boundaries, and
comparison with the value of local critical current reveals a strait
correlation between the density of inclusions and the current but shows
remarkable quantitative disagreement.

26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
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
30
The categories of this paper are: q-alg