Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Possible complete miscibility of $(BN)_x(C_2)_{1-x}$ alloys   The stabilities of $(BN)_x(C_2)_{1-x}$ alloys and related superlattices are
investigated by ab initio pseudopotential calculations. We find that the
$(BN)_1/(C_2)_1$ superlattices in (111) orientations have the lowest formation
energy among many short-range ordered $BNC_2$ structures due to the smallest
number of B-C and C-N bonds. Based on the calculated formation energies at
several compositions and for various ordered structures and assuming
thermodynamic equilibrium, the solid solution phase diagram of
$(BN)_x(C_2)_{1-x}$ alloys is constructed. We find that the complete
miscibility of $(BN)_x(C_2)_{1-x}$ alloys is possible, which is in contrast
with previous theoretical predictions but in agreement with experimental
reports.

26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs