Inorganic Solid Phases

KNbO3 Crystal Structure

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General Information

  • Phase Label(s): KNbO3 rt
  • Structure Class(es): –
  • Classification by Properties: antiferroelectric AFE, ferroelectric FE, ferroelectric FE (?), nonmetal, piezoe
  • Mineral Name(s): –
  • Pearson Symbol: oS10
  • Space Group: 38
  • Phase Prototype: BaTiO3
  • Measurement Detail(s): automatic diffractometer (determination of cell parameters), automatic diffractometer; United Kingdom, Harwell, Atomic Energy Research Establishment, PLUTO reactor, PANDA (determination of structural parameters), neutrons; λ = 0.10375 nm (determination of cell and structural parameters), T = 295 K (determination of cell and structural parameters)
  • Phase Class(es): –
  • Compound Class(es): oxide
  • Interpretation Detail(s): complete structure determined, Rietveld refinement; 28 variables, RB = 0.0211
  • Sample Detail(s): sample prepared from KNbO3, chemical analysis; 2 ppm Na, 1 ppm Ca, < 1 ppm Mg, powder (determination of cell and structural parameters)

Substance Summary

  • Standard Formula: KNbO3
  • Alphabetic Formula: KNbO3
  • Published Formula: KNbO3
  • Refined Formula: KNbO3
  • Wyckoff Sequence: 38,db2a
  • Z Formula Units: 2
  • Density: ρ = 4.62 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]

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_1216421

  • 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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