Crystal structure of pseudorhombohedral InFe1-xTixO3+x/2(x = 2/3)

Yuichi Michiue; Mitsuko Onoda; Akiteru Watanabe; Mamoru Watanabe; Francisco Brown; Noboru Kimizuka

doi:10.1006/jssc.2001.9425

Crystal structure of pseudorhombohedral InFe_1-xTi_xO_3+x/2(x = 2/3)

Yuichi Michiue^*, Mitsuko Onoda, Akiteru Watanabe, Mamoru Watanabe, Francisco Brown, Noboru Kimizuka

^*Corresponding author for this work

Departamento de Investigación en Polímeros y Materiales

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The structure of pseudorhombohedral-type InFe_1-xTi_xO_3-x/2 (x = 2/3) was refined by Rietveld profile fitting. The crystal is a commensurate member of a series in a solution range on InFeO₃-In₂Ti₂O₇ including incommensurate structures. The structure with the unit cell of a = 5.9188(1), b = 10.1112(2), and c = 6.3896(1) Å, β = 108.018(2)°, and a space group P 2₁/a is the alternate stacking of an edge-shared InO₆ octahedral layer and an Fe/Ti-O plane along c*. Metal sites on the Fe/Ti-O plane are surrounded by four oxygen atoms on the Fe/Ti-O plane and two axial ones. Electric conductivities of the order 10^-4 S/cm were observed for the samples at 1000 K, while the oxide ion transport number is almost zero as no electromotive force was detected by an oxygen concentration cell.

Original language	English
Article number	99425
Pages (from-to)	455-458
Number of pages	4
Journal	Journal of Solid State Chemistry
Volume	163
Issue number	2
DOIs	https://doi.org/10.1006/jssc.2001.9425
State	Published - 2002

Keywords

Composite crystal
InFeTiO
Rietveld analysis
Superstructure

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10.1006/jssc.2001.9425

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title = "Crystal structure of pseudorhombohedral InFe1-xTixO3+x/2(x = 2/3)",

abstract = "The structure of pseudorhombohedral-type InFe1-xTixO3-x/2 (x = 2/3) was refined by Rietveld profile fitting. The crystal is a commensurate member of a series in a solution range on InFeO3-In2Ti2O7 including incommensurate structures. The structure with the unit cell of a = 5.9188(1), b = 10.1112(2), and c = 6.3896(1) {\AA}, β = 108.018(2)°, and a space group P 21/a is the alternate stacking of an edge-shared InO6 octahedral layer and an Fe/Ti-O plane along c*. Metal sites on the Fe/Ti-O plane are surrounded by four oxygen atoms on the Fe/Ti-O plane and two axial ones. Electric conductivities of the order 10-4 S/cm were observed for the samples at 1000 K, while the oxide ion transport number is almost zero as no electromotive force was detected by an oxygen concentration cell.",

keywords = "Composite crystal, InFeTiO, Rietveld analysis, Superstructure",

author = "Yuichi Michiue and Mitsuko Onoda and Akiteru Watanabe and Mamoru Watanabe and Francisco Brown and Noboru Kimizuka",

year = "2002",

doi = "10.1006/jssc.2001.9425",

language = "Ingl{\'e}s",

volume = "163",

pages = "455--458",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Crystal structure of pseudorhombohedral InFe1-xTixO3+x/2(x = 2/3)

AU - Michiue, Yuichi

AU - Onoda, Mitsuko

AU - Watanabe, Akiteru

AU - Watanabe, Mamoru

AU - Brown, Francisco

AU - Kimizuka, Noboru

PY - 2002

Y1 - 2002

N2 - The structure of pseudorhombohedral-type InFe1-xTixO3-x/2 (x = 2/3) was refined by Rietveld profile fitting. The crystal is a commensurate member of a series in a solution range on InFeO3-In2Ti2O7 including incommensurate structures. The structure with the unit cell of a = 5.9188(1), b = 10.1112(2), and c = 6.3896(1) Å, β = 108.018(2)°, and a space group P 21/a is the alternate stacking of an edge-shared InO6 octahedral layer and an Fe/Ti-O plane along c*. Metal sites on the Fe/Ti-O plane are surrounded by four oxygen atoms on the Fe/Ti-O plane and two axial ones. Electric conductivities of the order 10-4 S/cm were observed for the samples at 1000 K, while the oxide ion transport number is almost zero as no electromotive force was detected by an oxygen concentration cell.

AB - The structure of pseudorhombohedral-type InFe1-xTixO3-x/2 (x = 2/3) was refined by Rietveld profile fitting. The crystal is a commensurate member of a series in a solution range on InFeO3-In2Ti2O7 including incommensurate structures. The structure with the unit cell of a = 5.9188(1), b = 10.1112(2), and c = 6.3896(1) Å, β = 108.018(2)°, and a space group P 21/a is the alternate stacking of an edge-shared InO6 octahedral layer and an Fe/Ti-O plane along c*. Metal sites on the Fe/Ti-O plane are surrounded by four oxygen atoms on the Fe/Ti-O plane and two axial ones. Electric conductivities of the order 10-4 S/cm were observed for the samples at 1000 K, while the oxide ion transport number is almost zero as no electromotive force was detected by an oxygen concentration cell.

KW - Composite crystal

KW - InFeTiO

KW - Rietveld analysis

KW - Superstructure

UR - http://www.scopus.com/inward/record.url?scp=0036330776&partnerID=8YFLogxK

U2 - 10.1006/jssc.2001.9425

DO - 10.1006/jssc.2001.9425

M3 - Artículo

SN - 0022-4596

VL - 163

SP - 455

EP - 458

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 2

M1 - 99425

ER -

Crystal structure of pseudorhombohedral InFe_1-xTi_xO_3+x/2(x = 2/3)

Abstract

Keywords

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