Inorganic Solid Phases

Fe2+Al2O4, (Fe2+,Mg)(Al,Fe3+)2O4 (MgFeAlO4) Crystal Structure

General Information

  • Phase Label(s): MgFeAlO4
  • Structure Class(es): spinel family
  • Classification by Properties: ferrimagnet FiM, semiconductor
  • Mineral Name(s): hercynite/spinel
  • Pearson Symbol: cF56
  • Space Group: 227
  • Phase Prototype: MgAl2O4
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; STOE AED2 (determination of structural parameters), X-rays, Mo Kα; λ = 0.071073 nm (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): oxide
  • Interpretation Detail(s): complete structure determined, least-squares refinement on F2; 152 reflections; F > 4σ(F), R = 0.022; wR = 0.0563
  • Sample Detail(s): hercynite sample from Russia, Lake Baikal, electron microprobe analysis; Al1.965(7)Fe2+0.807(7)Mg0.189(4)Fe3+0.031(6)Zn0.004(2)V0.004(1)O4, single crystal (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Mg0.19Fe0.84Al1.97O4
  • Alphabetic Formula: Al1.97Fe0.84Mg0.19O4
  • Published Formula: Fe2+Al2O4, (Fe2+,Mg)(Al,Fe3+)2O4
  • Refined Formula: Al1.97Fe0.84Mg0.18O4Zn0.01
  • Wyckoff Sequence: 227,ecb
  • Z Formula Units: 8
  • Density: ρ = 4.15 Mg·m−3

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
U [nm2]
Type
Computed
Beq [nm2]

Anisotropic

Site
U11 [nm2]
U22 [nm2]
U33 [nm2]
U12 [nm2]
U13 [nm2]
U23 [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1223788

  • 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)

  • Cite this content

    Citation copied