growth_direction

Calling sequence

strain{ growth_direction }

Properties

• usage: $\mathrm{conditional}$

• type: vector of 3 integers: $(z_1,z_2,z_3)$

• values: no constraints

• default: $r_1=1.0$, $r_2=0.0$, $r_3=0.0$

• unit: $-$

Dependencies

• This keyword is not allowed if simulate1D{ } is defined.

Functionality

Defines a normal vector to a substrate surface, corresponding to the growth direction, for a pseudomorphic strain model. It is defined in crystal coordinate system. It can be specified in a 2D and 3D simulations, but not in a 1D simulation as the crystal direction along the x-axis is always chosen in this case.

Example

strain{
    growth_direction = [1, 1, 0]
    pseudomorphic_strain{}
}

global{
    simulate2D{}
    ...
}