© Oxford Instruments Analytical Limited 2001 Introduction to Basic Crystallography - Zones in the...

© Oxford Instruments Analytical Limited 2001

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

© Oxford Instruments Analytical Limited 2001

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.

© Oxford Instruments Analytical Limited 2001

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

© Oxford Instruments Analytical Limited 2001

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

© Oxford Instruments Analytical Limited 2001

Introduction to Basic Crystallography - The Orientation Matrix

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

sample axes.

© Oxford Instruments Analytical Limited 2001

Introduction to Basic Crystallography - Ideal Orientation Nomenclature

• In this example the orientation of the crystal shown can be written as: {100}<110>

© Oxford Instruments Analytical Limited 2001

Introduction to Basic Crystallography - Misorientation

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