Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Domain Structures in Confined Nanoferroelectrics: Phase Field Approach   Phase field modeling of domain structures in ferroelectrics nanorods of
different shape and sizes is presented. The vortex domain configurations in
confined ferroelectrics have been explored by varying the ratio of the energies
of electrostatic and elastic interactions. It is shown that a strong effect of
the electrostatic interactions can cause the formation of 90o domain walls that
do not satisfy the condition of strain compatibility. A good agreement between
the results of phase field modeling and the results of atomistic calculations
for nano ferroelectrics demonstrates that the phase field approach provides an
effective tool for the analysis of domain structures in nano-ferroelectrics.

17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat