Crystal Lattice Structures:	Creation Date: 17 April 2002
	Last Modified: 21 Oct 2004

The Al₂Cu (C16) 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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• Prototype: Al₂Cu
• Pearson Symbol: tI12
• Strukturbericht Designation: C16
• Space Group: I4/mcm (Cartesian and lattice coordinate listings available)
• Number: 140
• Primitive Vectors:

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

• Basis Vectors:

  B1	=	- ¼ A1 - ¼ A2 + ½ A3	=	+ ¼ c Z	(Cu)	(4a)
  B2	=	+ ¼ A1 + ¼ A2 - ½ A3	=	- ¼ c Z	(Cu)	(4a)
  B3	=	+ x A1 + (½ + x) A2	=	+ x a X + (½ + x) a Y	(Al)	(8h)
  B4	=	- x A1 + (½ - x) A2	=	- x a X + (½ - x) a Y	(Al)	(8h)
  B5	=	(½ - x) A1 + x A2	=	(½ - x) a X + x a Y	(Al)	(8h)
  B6	=	(½ + x) A1 - x A2	=	(½ + x) a X - x a Y	(Al)	(8h)

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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).