Crystal Lattice Structures: Creation Date: 16 Dec 1997 Last Modified: 21 Oct 2004

# The Ga3Pt5 Structure

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• When a = b = 2 c and x1 = x2 = ¼ the atoms are on the sites of a face centered cubic lattice. The data for Al3Ni5 in Pearson's Handbook show that this compound is very close to the ideal structure.
• Pearson doesn't provide atomic coordinates for the prototype structure, Ga3Pt5, so we use the data for Al3Ni5 in the same structure.

• Prototype: Ga3Pt5
• Pearson Symbol: oC16
• Space Group: Cmmm (Cartesian and lattice coordinate listings available)
• Number: 65
• Other compounds with this structure: Al3Ni5, Ga3Ni5, Ni3Pd5
• Primitive Vectors:  A1 = ½ a X - ½ b Y A2 = ½ a X + ½ b Y A3 = c Z
• Basis Vectors:  B1 = 0 (Ni-I) (2a) B2 = ½ A2 = ¼ a X + ¼ b Y (Ni-II) (4e) B3 = ½ A1 = ¼ a X - ¼ b Y (Ni-II) (4e) B4 = - x1 A1 + x1 A2 + ½ A3 = + x1 b Y + ½ c Z (Ni-III) (4j) B5 = + x1 A1 - x1 A2 + ½ A3 = - x1 b Y + ½ c Z (Ni-III) (4j) B6 = ½ A1 + ½ A2 = ½ a X (Al-I) (2b) B7 = + x2 A1 + x2 A2 + ½ A3 = + x2 a X + ½ c Z (Al-II) (4h) B8 = - x2 A1 - x2 A2 + ½ A3 = - x2 a X + ½ c Z (Al-II) (4h)

### See these vectors in LaTeX output format.

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 Structures indexed by: This is a mirror of an old page created at theNaval Research LaboratoryCenter for Computational Materials ScienceThe 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).