The pleochroic colours are at their maximum when light is polarized parallel with a crystallographic axis.
2.
As a result the shape of the signal is directly influence because the Ge crystal is anisotropic with respect to the crystallographic axis direction.
3.
Texture is often represented using a pole figure, in which a specified crystallographic axis ( or pole ) from each of a representative number of crystallites is plotted in a stereographic projection, along with directions relevant to the material's processing history.
4.
They are summarized below; a, b, and c represent the axes, and ?, ?, ? represent the angle opposite the respective crystallographic axis ( e . g . ? is the angle opposite the a-axis, viz . the angle between the b and c axes ):
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