Crystal Lattice Structures:	Creation Date:  2 Dec 2002
	Last Modified: 21 Oct 2004

The AsGa 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 high-pressure structure of AsGa. According to Pearson's Handbook, it is stable above 24 GPa. The lattice constants used here are for P = 28.1 GPa.
• Without loss of generality we can take z₁ = 0.
• When a = b and z₂ = z₁ + ¼ this structure becomes the βSn (A5) structure.

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• Prototype: AsGa (above 24 GPa)
• Pearson Symbol: oI4
• Space Group: Imm2 (Cartesian and lattice coordinate listings available)
• Number: 44
• Reference: Pearson's Handbook, Vol. I, p. 1135.
• Primitive Vectors:

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

• Basis Vectors:

  B1	=	- z1 A1 - z1 A2 + 2 z1 A3	=	z1 c Z	(As)	(2a)
  B2	=	- z2 A1 + (½ - z2) A2 + (2 z2 - 1) A3	=	- ½ a X + (z2 - ½) c Z	(Ga)	(2b)

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Structures indexed by: Strukturbericht Symbol Pearson Symbol Space Group Prototype

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