Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Band structure calculations of Ti\raisebox{-.2ex}{\scriptsize 2}FeSn: a
  new half-metallic compound   Within the framework of density functional theory, the electronic structure
and magnetic properties have been studied for the
Ti\raisebox{-.2ex}{\scriptsize 2}FeSn full-Heusler compound. The ferromagnetic
state is found to be energetically more favorable than paramagnetic and
antiferromagnetic states. The spin-polarized results show that
Ti\raisebox{-.2ex}{\scriptsize 2}FeSn compound has half-metallic ferromagnetic
character with a total spin moment of $2 \mu_{B}$ and a band gap in the
minority spin channel of 0.489 eV, at the equilibrium lattice constant a=6.342
A.

5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
2
The categories of this paper are: math