EXAFS studies of SrSn1-xSbxO3 and BaPb1-xBixO3

Wendy R. Flavell; Michael Mian; Adam J. Roberts; Julian F. Howlett; Md Moinuddin Sarker; Paul L. Wincott; Robert L. Bilsborrow; Gert Van Dorssen

EXAFS studies of SrSn1-xSbxO3 and BaPb1-xBixO3

Wendy R. Flavell, Michael Mian, Adam J. Roberts, Julian F. Howlett, Md Moinuddin Sarker, Paul L. Wincott, Robert L. Bilsborrow, Gert Van Dorssen

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Abstract

EXAFS is used to study changes in local structure which occur on doping at the B site in two related perovskite oxides, SrSn1-xSbxO3 and BaPb1-xBixO3. In the case of the stannate, data is taken at the Sr K, Sb K and Sn K edges. A combination of near-edge XAS and EXAFS measurements show that Sb dopes into the material as SbV. In the case of the bismuthate, data is taken at the low-intensity Bi LI and Pb LII edges, with the aim of resolving controversy surrounding the interpretation of EXAFS data taken at the overlapping LIII edges. In BaBiO3, two Bi-O bond lengths are observed, suggesting the presence of a charge density wave. In this material, equal proportions of these two bond lengths are present. However, as Pb is doped into the material, the proportion of oxygen bonded to Bi at the shorter of the two distances increases progressively.

Original language	English
Pages (from-to)	357-364
Number of pages	7
Journal	Journal of Materials Chemistry
Volume	7
Issue number	2
Publication status	Published - Feb 1997

Cite this

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title = "EXAFS studies of SrSn1-xSbxO3 and BaPb1-xBixO3",

abstract = "EXAFS is used to study changes in local structure which occur on doping at the B site in two related perovskite oxides, SrSn1-xSbxO3 and BaPb1-xBixO3. In the case of the stannate, data is taken at the Sr K, Sb K and Sn K edges. A combination of near-edge XAS and EXAFS measurements show that Sb dopes into the material as SbV. In the case of the bismuthate, data is taken at the low-intensity Bi LI and Pb LII edges, with the aim of resolving controversy surrounding the interpretation of EXAFS data taken at the overlapping LIII edges. In BaBiO3, two Bi-O bond lengths are observed, suggesting the presence of a charge density wave. In this material, equal proportions of these two bond lengths are present. However, as Pb is doped into the material, the proportion of oxygen bonded to Bi at the shorter of the two distances increases progressively.",

author = "Flavell, {Wendy R.} and Michael Mian and Roberts, {Adam J.} and Howlett, {Julian F.} and {Moinuddin Sarker}, Md and Wincott, {Paul L.} and Bilsborrow, {Robert L.} and {Van Dorssen}, Gert",

year = "1997",

month = feb,

language = "English",

volume = "7",

pages = "357--364",

journal = "Journal of Materials Chemistry",

issn = "1364-5501",

publisher = "Royal Society of Chemistry",

number = "2",

}

TY - JOUR

T1 - EXAFS studies of SrSn1-xSbxO3 and BaPb1-xBixO3

AU - Flavell, Wendy R.

AU - Mian, Michael

AU - Roberts, Adam J.

AU - Howlett, Julian F.

AU - Moinuddin Sarker, Md

AU - Wincott, Paul L.

AU - Bilsborrow, Robert L.

AU - Van Dorssen, Gert

PY - 1997/2

Y1 - 1997/2

N2 - EXAFS is used to study changes in local structure which occur on doping at the B site in two related perovskite oxides, SrSn1-xSbxO3 and BaPb1-xBixO3. In the case of the stannate, data is taken at the Sr K, Sb K and Sn K edges. A combination of near-edge XAS and EXAFS measurements show that Sb dopes into the material as SbV. In the case of the bismuthate, data is taken at the low-intensity Bi LI and Pb LII edges, with the aim of resolving controversy surrounding the interpretation of EXAFS data taken at the overlapping LIII edges. In BaBiO3, two Bi-O bond lengths are observed, suggesting the presence of a charge density wave. In this material, equal proportions of these two bond lengths are present. However, as Pb is doped into the material, the proportion of oxygen bonded to Bi at the shorter of the two distances increases progressively.

AB - EXAFS is used to study changes in local structure which occur on doping at the B site in two related perovskite oxides, SrSn1-xSbxO3 and BaPb1-xBixO3. In the case of the stannate, data is taken at the Sr K, Sb K and Sn K edges. A combination of near-edge XAS and EXAFS measurements show that Sb dopes into the material as SbV. In the case of the bismuthate, data is taken at the low-intensity Bi LI and Pb LII edges, with the aim of resolving controversy surrounding the interpretation of EXAFS data taken at the overlapping LIII edges. In BaBiO3, two Bi-O bond lengths are observed, suggesting the presence of a charge density wave. In this material, equal proportions of these two bond lengths are present. However, as Pb is doped into the material, the proportion of oxygen bonded to Bi at the shorter of the two distances increases progressively.

M3 - Article

SN - 1364-5501

VL - 7

SP - 357

EP - 364

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

IS - 2

ER -

EXAFS studies of SrSn1-xSbxO3 and BaPb1-xBixO3

Abstract

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