gitterparametre
Gitterparametre, or lattice parameters, are the lengths and angles that define the geometry of a crystal's unit cell. They are commonly denoted a, b, c for the cell edges and α, β, γ for the angles between them. These parameters determine the size and shape of the unit cell and, together with the crystal system, describe how atoms are arranged in three-dimensional space. The unit of length is typically the ångström (Å), and angles are measured in degrees. The cell volume can be calculated from the parameters with the formula V = abc sqrt(1 - cos^2 α - cos^2 β - cos^2 γ + 2 cos α cos β cos γ).
The lattice parameters reflect the symmetry and geometry of the crystal system. In high-symmetry systems, some
Measuring and refining lattice parameters is central to crystallography. They are determined from X-ray diffraction (XRD),