Cubic Single Crystal

A typical far-field diffraction pattern for a perfect cubic single crystal. The following animations will show what would happen to the diffraction pattern when the microstructure is changed through elasticity, plasticity, rotation (changes in orientation), and phase transformation.

Elastic Deformation

The virtual sample is uniaxially strained in the (010) direction assuming a Poisson's ratio of 0.5. 

Plastic Deformation

When the material plastically deformed, the spots broaden. The shape and size of the broadening can be used to identify the active sli

Rotation

A change in orientation of the single crystal (or grain in a polycrystal) will rotate the spots around their respective radii. 

Phase Transformation

As the material transforms to a different crystal structure (in this case orthorhombic), the cubic phase will decrease in intensity as the orthorhombic phase increases in intensity. Often, a material will transform from a high symmetry phase (e.g., cubic) to a low symmetry phase (e.g., orthorhombic). This change in symmetry is reflected in the symmetry of the diffraction pattern.