Crystal Lattice Structures:	Reference Date:  1 Jan 2002
	Last Modified: 21 Oct 2004

The ηAgZn (B_b) Structure

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• 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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• When z_Zn = 0, x_M = 1/3, y_M = 0, and z_M = 1/2, this structure becomes the hexagonal omega (C32) structure.
• This is an alloy phase. The (1a) and (2d) sites are pure Zn, but the (6g) site is a mixture of Ag and Zn, so we designate it as ``M''. If the system is stoichiometric then M = Ag_4.5Zn_1.5.

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• Prototype: ηAgZn
• Pearson Symbol: hP9
• Strukturbericht Designation: B_b
• Space Group: P3 (Cartesian and lattice coordinate listings available)
• Number: 147
• Other Compounds with this Structure: Ag₁₀CdZn₉, Ag₅₀MgZn₄₉
• Primitive Vectors:

  A1	=	½ a X - ½ 3½ a Y
  A2	=	½ a X + ½ 3½ a Y
  A3	=	c Z

• Basis Vectors:

  B1	=		0		(Zn-I)	(1a)
  B2	=	1/3 A1 + 2/3 A3 + zZn A3	=	½ a X + 12-½ a Y + zZn c Z	(Zn-II)	(2d)
  B3	=	2/3 A1 + 1/3 A3 + zZn A3	=	½ a X - 12-½ a Y + zZn c Z	(Zn-II)	(2d)
  B4	=	+xMA1 +yM A2 +zMA3	=	+ ½ (xM+yM) a X + ½ 3½(yM-xM) a Y +zM c Z	(M)	(6g)
  B5	=	-yMA1 +(xM-yM)A2 +zMA3	=	+ ½ (xM-2yM) a X + ½ 3½xM a Y +zM c Z	(M)	(6g)
  B6	=	+(yM-xM)A1 -xMA2 +zMA3	=	+ ½ (yM-2xM) a X - ½ 3½yM a Y +zM c Z	(M)	(6g)
  B7	=	-xMA1 -yM A2 -zMA3	=	- ½ (xM+yM) a X + ½ 3½(xM-yM) a Y -zM c Z	(M)	(6g)
  B8	=	+yMA1 +(yM-xM)A2 -zMA3	=	+ ½ (2yM-xM) a X - ½ 3½xM a Y -zM c Z	(M)	(6g)
  B9	=	+(xM-yM)A1 +xMA2 -zMA3	=	+ ½ (2xM-yM) a X + ½ 3½yM a Y -zM c Z	(M)	(6g)

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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).