Inorganic Solid Phases

La3Ag4Mg12; τ6-La3Ag4+xMg12−x (Mg12Ag4La3) Crystal Structure

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General Information

  • Phase Label(s): Mg12Ag4La3
  • Structure Class(es): –
  • Classification by Properties: –
  • Mineral Name(s): –
  • Pearson Symbol: hP38
  • Space Group: 194
  • Phase Prototype: Gd3Ru4Al12
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; Philips X'Pert MPD (determination of structural parameters), X-rays, Cu Kα (determination of cell and structural parameters)
  • Phase Class(es): –
  • Compound Class(es): intermetallic
  • Interpretation Detail(s): complete structure determined; composition dependence studied, Rietveld refinement, multiphase; 28 variables, RP = 0.0542; wRP = 0.0710; RB = 0.0458
  • Sample Detail(s): sample prepared from Mg, Ag, La, energy-dispersive X-ray analysis; Mg65.1Ag18.0La16.9; amounts of La(Mg1−xAgx)3 and La2(Mg1−xAgx)17 (6.3 and 1.5 wt.%), powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Mg12Ag4La3
  • Alphabetic Formula: Ag4La3Mg12
  • Published Formula: La3Ag4Mg12; τ6-La3Ag4+xMg12−x
  • Refined Formula: Ag4.01La3Mg11.99
  • Wyckoff Sequence: 194,kh2gfba
  • Z Formula Units: 2
  • Density: ρ = 4.20 Mg·m−3
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Crystallographic Data

Cell Parameters

Published Data
Standardized Data
Unit Cell
Niggli-Reduced Cell
Space Group
a
b
c
α
β
γ
a/b
b/c
c/a
V

Atom Coordinates

Standardized

Site
Element
Wyckoff Symbol
Symmetry
X
Y
Z
Occupation
Co-ord. No.
Atomic Env.

Published

Site
Element
Wyckoff Symbol
Symmetry
X
Y
Z
Occupation

Displacement Parameters

Isotropic

Site
Published
B [nm2]
Type
Computed
Beq [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1127652

  • Copyright

    ©Springer & Material Phases Data System (MPDS), Switzerland & National Institute for Materials Science (NIMS), Japan, 2016

  • Chief Editor

    Pierre Villars, Material Phases Data System (MPDS), CH-6354 Vitznau, Switzerland

    villars.mpds@bluewin.ch

  • Credits

    SpringerMaterials Release 2016.

    Data generated pre-2002: © Springer & MPDS & NIMS; post-2001: © Springer & MPDS

    All Rights Reserved. Version 2016.10.

    Project Coordinator: Shuichi Iwata

    Section-Editor: Karin Cenzual (Crystal Structures)

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