Introduction to Basic Crystallography - Zones in the EBSP

1
Introduction to Basic Crystallography - Zones in
the EBSP

• In an Electron Backscatter Diffraction Pattern
  (EBSP), the intersection of Kikuchi bands
  correspond to 'Zones Axes' in the crystal

These can be 'indexed' and displayed
2
Introduction to Basic Crystallography - Indexing

• Indexing an (EBSP) refers to the recognition and
  labelling of bands and zones in the pattern,
  which relate to specific planes and directions in
  the crystal.

3
Introduction to Basic Crystallography - Euler
Angles

• Euler Angles are the three rotations about the
  main crystal axes
• Euler angles are one possible means of describing
  a crystal orientation

4
Introduction to Basic Crystallography - Euler
Space

• Euler Space was popularized for macro-texture
  investigations as the 'Orientation Distribution
  Function' (ODF).
• ODFs are an established method for interpreting
  the results from x-ray diffraction

5
Introduction to Basic Crystallography - The
Orientation Matrix

• The orientation matrix describes the absolute
  orientation of the crystal with respect to the
  sample axes.

6
Introduction to Basic Crystallography - Ideal
Orientation Nomenclature

• In this example the orientation of the crystal
  shown can be written as 100lt110gt

7
Introduction to Basic Crystallography -
Misorientation

• Misorientation is the expression of the
  orientation of one crystal with respect to
  another crystal.