The HCP Crystal Structure

Last modified 5 April 2001

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.

• Prototype: Mg
• Pearson Symbol: hP2
• Strukturbericht Designation: A3
• Space Group: P6₃/mmc (Cartesian and lattice coordinate listings available)
• Number: 194
• Other Elements with this Structure: Be, Sc, Te, Co, Zn, Y, Zr, Tc, Ru, Gd, Tb, Py, Ho, Er, Tm, Lu, Hf, Re, Os, Tl
• Primitive Vectors:
  • A₁ = ½ a X - ½ 3^1/2 a Y
  • A₂ = ½ a X + ½ 3^1/2 a Y
  • A₃ = c Z

• Basis Vectors:
  • B₁ = 1/3 A₁ + 2/3 A₂ + ¼ A₃ = ½ a X + ½ 3^-1/2 a Y + ¼ c Z
  • B₂ = 2/3 A₁ + 1/3 A₂ + ¾ A₃ = ½ a X - ½ 3^-1/2 a Y + ¾ c Z

See these vectors in a better notation.

Go back to the Hexagonal Close Packed structures page.

Go back to Crystal Lattice Structure page.

Structures indexed by:

• Strukturbericht Designation
• Pearson Symbol
• Space Group
• Prototype