Crystal Lattice Structures:	Reference Date: 5 August 1997
	Last Modified: 21 Oct 2004

The CuAu (L1₀) Structure

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.
• visualize the structure (Uses the JMOL Applet)

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• This is a tetragonal distortion of the fcc structure. The atoms are at the positions of a face centered cubic lattice when c = a. Indium (A6) has a related structure. The B19 (AuCd) structure reduces to L1₀ in certain cases, as does the L6₀ (CuTi₃) structure.
• Note that Pearson's Handbook sometimes assigns a Pearson symbol of tP4, rather than tP2. Since Pearson's Handbook also says CuTi₃ is in the CuAu structure, I'll use my best judgment.

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• Prototype: AuCu
• Pearson Symbol: tP2
• Strukturbericht Designation: L1₀
• Space Group: P4/mmm (Cartesian and lattice coordinate listings available)
• Number: 123
• Other Compounds with this Structure: TiAl, NlIn
• Primitive Vectors:

  A1	=	½ a X - ½ a Y
  A2	=	½ a X + ½ a Y
  A3	=	c Z

• Basis Vectors:

  B1	=		0		(Au)	(1a)
  B2	=	½ A1 + ½ A2 + ½ A3	=	½ a X + ½ c Z	(Cu)	(1d)

See these vectors in LaTeX output format.

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Structures indexed by: Strukturbericht Symbol Pearson Symbol Space Group Prototype

This is a mirror of an old page created at the Naval Research Laboratory Center for Computational Materials Science The maintained successor is hosted at http://www.aflowlib.org/CrystalDatabase/ and published as M. Mehl et al., Comput. Mater. Sci. 136 (Supp.), S1-S828 (2017).