Crystallographic axis and axial angles
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The document discusses crystallographic axes, which are imaginary lines drawn within a crystal lattice that define a coordinate system. There must be 3 or sometimes 4 axes for 3D crystal lattices. The axes can be equal or unequal in length and perpendicular, or the vertical axis can be different in length from equal horizontal axes separated by 120 degrees, or all three axes can be unequal and one may be inclined relative to the others.
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Crystallographic axis and axial angles
- 2. Crystallographic Axis – The crystallographic axes are imaginary lines that we can draw within the crystal lattice. These will define a coordinate system within the crystal. For 3- dimensional space lattices we need 3 or in some cases 4 crystallographic axes that define directions within the crystal lattices.
- 3. All axis are equal in length and perpendicular
- 4. OR Vertical axis is different in length and all are perpendicular
- 5. All axis are unequal in length and perpendicular
- 6. Vertical axis is different and perpendicular, whereas three horizontal axis are equal in length and separated by 120 angle
- 7. All three axis are unequal and a-axis is inclined
- 8. All three axis are unequal and inclined
- 9. Waiting for your questions……. Thank You