Inorganic Solid Phases

(K,Gd)2Ta2O7; (K2−xGdx)Ta2O6+x, x~ 0.4 (K1.6Gd0.4Ta2O6.4) Crystal Structure

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General Information

  • Phase Label(s): K1.6Gd0.4Ta2O6.4
  • 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 parameters), automatic diffractometer; U.S.A. New York, Ithaca, Cornell High Energy Synchrotron Source CHESS (determination of structural parameters), X-rays, synchrotron; λ = 0.0486 nm (determination of cell and structural parameters), p = 0.0001 GPa (determination of cell and structural parameters)
  • Phase Class(es): –
  • Compound Class(es): oxide
  • Interpretation Detail(s): complete structure determined; pressure dependence studied, Rietveld refinement, wRP = 0.176; RB = 0.064
  • Sample Detail(s): powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: K1.6Gd0.4Ta2O6.4
  • Alphabetic Formula: Gd0.4K1.6O6.4Ta2
  • Published Formula: (K,Gd)2Ta2O7; (K2−xGdx)Ta2O6+x, x~ 0.4
  • Refined Formula: Gd0.40K1.60O6.40Ta2
  • Wyckoff Sequence: 227,fdca
  • Z Formula Units: 8
  • Density: ρ = 6.78 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

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1944701

  • 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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