Now take one of the vertices of the primitive unit cell as the origin.
2.
Here the unit cell ( equivalent to 3 primitive unit cells ) is a hexagonal prism containing six atoms.
3.
It can be the volume per primitive unit cell, volume per conventional unit cell, or even molar volume.
4.
Locate a primitive unit cell of the FCC, i . e ., a unit cell with one lattice point.
5.
The primitive unit cell for the body-centered cubic crystal structure contains several fractions taken from nine atoms : one on each corner of the cube and one atom in the center.
6.
From these ideas, it can be concluded that increasing crystal complexity, which is described by a complexity factor CF ( defined as the number of atoms / primitive unit cell ), decreases ? L.
7.
Bustamite is a triclinic mineral, which could be described by a primitive unit cell, but the larger A-centered cell is often preferred, in order to facilitate comparison with the similar mineral wollastonite.
8.
For unit cells generally, lattice points that are shared by cells are counted as } } of the lattice points contained in each of those cells; so for example a primitive unit cell in three dimensions which has lattice points only at its eight vertices is considered to contain of each of them.
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