Inorganic Solid Phases

Tl2Ba2CaCu2O8−x, x= 0.24 (Ba2CaCu2Tl2O8) Crystal Structure

General Information

  • Phase Label(s): Ba2CaCu2Tl2O8
  • Structure Class(es): high-Tc cuprate family
  • Classification by Properties: diamagnetic, high-Tc superconductor, intermediate valence, metal, superconducto
  • Mineral Name(s):
  • Pearson Symbol: tI30
  • Space Group: 139
  • Phase Prototype: Ba2CaCu2Tl2O8
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; United Kingdom, Chilton-Didcot, Rutherford Appleton Laboratory, ISIS Facility, POLARIS (determination of structural parameters), neutrons, time-of-flight (determination of cell and structural parameters)
  • Phase Class(es):
  • Compound Class(es): oxide
  • Interpretation Detail(s): complete structure determined, Rietveld refinement; 1821 reflections, RP = 0.0435; wRP = 0.0255
  • Sample Detail(s): sample prepared from Cu[NO3]2[H2O]3, Ba[OH]2[H2O], CaO, Tl2O3, energy-dispersive X-ray analysis; 28(1)Tl:28.3(8)Ba:13.3(8)Ca:31(2)Cu; Tl1.989Ba2CaCu2O7.9835 considering weight loss; small amounts of unidentified phase (d= 0.176, 0.215 nm), less than 1 % BaCO3, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: Ba2CaCu2Tl2O7.76
  • Alphabetic Formula: Ba2CaCu2O7.76Tl2
  • Published Formula: Tl2Ba2CaCu2O8−x, x= 0.24
  • Refined Formula: Ba2CaCu2O7.68Tl2
  • Wyckoff Sequence: 139,nge4a
  • Z Formula Units: 2
  • Density: ρ = 7.42 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]

Experimental Details

Reference

3D Interactive Structure

About this content

  • Database name

    PAULING FILE Multinaries Edition – 2012

  • Dataset ID

    sd_1252994

  • 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

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