Examples : MEAM Potentials


Warning: This is an example potential. Please do NOT use it for any real simulations!

This is an MEAM potential that can be used in potfit.

Example_MEAM_2
#F 0 12
#T MEAM
#I 0 0 0 0 0 0 0 0 0 0 0 0
#E
 
type eopp_sc
cutoff 6.0
C_1     15.00   1.00    10000.00
eta_1   6.00    1.00    20.00
C_2     5.00    -100.00 100.00
eta_2   3.00    1.00    10.00
k       2.50    0.00    6.00
phi     3.00    0.00    6.30
h       1.00    0.50    2.00
 
type eopp_sc
cutoff 6.0
C_1     15.00   1.00    10000.00
eta_1   6.00    1.00    20.00
C_2     5.00    -100.00 100.00
eta_2   3.00    1.00    10.00
k       2.50    0.00    6.00
phi     3.00    0.00    6.30
h       1.00    0.50    2.00
 
type eopp_sc
cutoff 6.0
C_1     15.00   1.00    10000.00
eta_1   6.00    1.00    20.00
C_2     5.00    -100.00 100.00
eta_2   3.00    1.00    10.00
k       2.50    0.00    6.00
phi     3.00    0.00    6.30
h       1.00    0.50    2.00
 
type csw2_sc
cutoff 6.0
a       0.20    -2.00   2.00
alpha   2.00    1.00    6.00
phi     0.00    0.00    6.30
beta    3.00    0.50    5.00
h       1.00    0.50    2.00
 
type csw2_sc
cutoff 6.0
a       0.20    -2.00   2.00
alpha   2.00    1.00    6.00
phi     0.00    0.00    6.30
beta    3.00    0.50    5.00
h       1.00    0.50    2.00
 
type bjs
cutoff 6.0
F_0     -1.00   -10.00  0.00
gamma   2.00    0.10    2.00
F_1     2.00    1.00    5.00
 
type bjs
cutoff 6.0
F_0     -1.00   -10.00  0.00
gamma   2.00    0.10    2.00
F_1     2.00    1.00    5.00
 
type csw2_sc
cutoff 6.0
a       0.20    -2.00   2.00
alpha   2.00    1.00    6.00
phi     0.00    0.00    6.30
beta    3.00    0.50    5.00
h       1.00    0.50    2.00
 
type csw2_sc
cutoff 6.0
a       0.20    -2.00   2.00
alpha   2.00    1.00    6.00
phi     0.00    0.00    6.30
beta    3.00    0.50    5.00
h       1.00    0.50    2.00
 
type csw2_sc
cutoff 6.0
a       0.20    -2.00   2.00
alpha   2.00    1.00    6.00
phi     0.00    0.00    6.30
beta    3.00    0.50    5.00
h       1.00    0.50    2.00
 
type parabola
cutoff 6.0
alpha   1.00    -10.00  10.00
beta    1.00    -10.00  10.00
gamma   1.00    -10.00  10.00
 
type parabola
cutoff 6.0
alpha   1.00    -10.00  10.00
beta    1.00    -10.00  10.00
gamma   1.00    -10.00  10.00

The analytic functions used in this example are chosen arbitrarily. Especially the angular dependent function (parabola) has never been tested.

makeapot

The example potential can be generated with the following makeapot command:

makeapot -n 2 -i meam -f 3*eopp_sc 2*csw2_sc 2*bjs 3*csw2_sc 2*parabola