Inorganic Solid Phases

Y2(Nb0.86Y0.14)2O6.91 (Y2Nb2O7) Crystal Structure

General Information

  • Phase Label(s): Y2Nb2O7
  • Structure Class(es): pyrochlore family
  • Classification by Properties:
  • Mineral Name(s):
  • Pearson Symbol: cF88
  • Space Group: 227
  • Phase Prototype: Ca2Nb2O7
  • Measurement Detail(s): automatic diffractometer (determination of cell and structural parameters), neutrons; λ = 0.15404 nm (determination of cell and structural parameters), T = 298 K (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): oxide
  • Interpretation Detail(s): complete structure determined, Rietveld refinement, RP = 0.0426; wRP = 0.0511
  • Sample Detail(s): sample prepared from Y2O3, NbO2, Nb2O5, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Y2.28Nb1.72O6.91
  • Alphabetic Formula: Nb1.72O6.91Y2.28
  • Published Formula: Y2(Nb0.86Y0.14)2O6.91
  • Refined Formula: Nb1.72O6.95Y2.28
  • Wyckoff Sequence: 227,feca
  • Z Formula Units: 8
  • Density: ρ = 5.70 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
B [nm2]
Type
Computed
Beq [nm2]

Anisotropic

Site
B11 [nm2]
B22 [nm2]
B33 [nm2]
B12 [nm2]
B13 [nm2]
B23 [nm2]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1627768

  • 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