# Set up lattice
vector_a = [5.64056, 0.0, 0.0]*Angstrom
vector_b = [0.0, 5.64056, 0.0]*Angstrom
vector_c = [0.0, 0.0, 5.64056]*Angstrom
lattice = UnitCell(vector_a, vector_b, vector_c)
# Define elements
elements = [Sodium, Chlorine, Sodium, Chlorine, Sodium, Chlorine, Sodium,
Chlorine]
# Define coordinates
fractional_coordinates = [[ 0. , 0. , 0. ],
[ 0.5, 0.5, 0.5],
[ 0.5, 0.5, 0. ],
[ 0. , 0. , 0.5],
[ 0.5, 0. , 0.5],
[ 0. , 0.5, 0. ],
[ 0. , 0.5, 0.5],
[ 0.5, 0. , 0. ]]
# Set up configuration
bulk_configuration = BulkConfiguration(
bravais_lattice=lattice,
elements=elements,
fractional_coordinates=fractional_coordinates
)