Definition:
A label identifying the displacement component of a given atom or rigid group that is being parameterized by Fourier series. a, b and c are the basic lattice vectors of the reference structure. For composites they refer to the reference structure of each subsystem. a1, a2 and a3 are defined by _atom_sites_displace_Fourier_axes_description.
Appears in list containing _atom_site_displace_Fourier_id
The data value must be one of the following:
x | displacement along the a axis |
y | displacement along the b axis |
z | displacement along the c axis |
a1 | displacement along an arbitrary a1 axis |
a2 | displacement along an arbitrary a2 axis |
a3 | displacement along an arbitrary a3 axis |
Type: char
Category: atom_site_displace_Fourier
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