Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Temperature-Induced magneto-structural transformations in nickel
  crystals   The magnetic and structural transformations in the nickel crystal within the
temperature range 470 < T< 631 K is studied on the basis of general
phenomenological theory of spin-orbit phase transitions. A new phase transition
at Tls \approx 570 K conditioned by cooperative relativistic interactions
effect is prognosticated and the experimental information validating the
existence of phase transition is presented.

34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin