Crystal Lattice Structures:	Creation Date: 29 Aug 2000
	Last Modified: 21 Oct 2004

The Simple Hexagonal Lattice (A_f)

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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• Unlike the simple cubic lattice, there are no elements which take this structure as the ground state. There is a metastable Silicon phase with this structure.

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• Prototype: γHgSn_6-10 (disordered)
• Pearson Symbol: hP1
• Strukturbericht Designation: A_f
• Space Group: P6/mmm (Cartesian and lattice coordinate listings available)
• Number: 191
• Reference: Pearson, Alloys, p 478
• Other systems with this structure: Si (metastable), disordered phases of BiIn, CdSn₁₉, In₇Sb₃, InSb
• Primitive Vectors:

  A1	=	½ a X - ½ 31/2 a Y
  A2	=	½ a X + ½ 31/2 a Y
  A3	=	c Z

• Basis Vector:

  B1 = 0

  (1a)

See these vectors in LaTeX output format.

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Go back to the hexagonal close-packed structures page.

Go back to Crystal Lattice Structure page.

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).