Al₃Ti (D0₂₂) Structure

Last modified 5 April 2001

You can now

• see the structure from several perspectives;
• examine the structure with an external viewer; or
• download the coordinates of the atoms in these pictures in XYZ format.

A lattice with tetragonal symmetry. The atoms are on the sites of a face centered cubic lattice when c = a. Note that our c is ½ that of Pearson's Handbook.

• Prototype: Al₃Ti
• Pearson Symbol: tI8
• Strukturbericht Designation: D0₂₂
• Space Group: I4/mmm (Cartesian and lattice coordinate listings available)
• Number: 139
• Other Compounds with this Structure:
• Primitive Vectors:
  • A₁ = a X
  • A₂ = a Y
  • A₃ = ½ a X + ½ a Y + c Z
• Basis Vector:
  • B₁ = 0   (Ti)   (2a)
  • B₂ = + ½ A₁ + ½ A₂ = ½ a X + ½ a Y   (Al)   (2b)
  • B₃ = + ¼ A₁ - ¼ A₂ + ½ A₃ = ½ a X + ½ c Z   (Al)   (4d)
  • B₄ = - ¼ A₁ + ¼ A₂ + ½ A₃ = ½ a Y + ½ c Z   (Al)   (4d)

See these vectors in a better notation.

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