Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Improper ferroelectricity in stuffed aluminate sodalites for
  pyroelectric energy harvesting   Ferroelectricity in stuffed aluminate sodalites is demonstrated in the
present study. The present results indicate that stuffed aluminate sodalites
exhibit excellent performance as a pyroelectric energy harvester, suggesting
that they exhibit great promise as a class of materials for highly efficient
energy harvesting devices. (See manuscript for the full abstract)

24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex