Neutron diffraction and MAS NMR of Cesium Tungstate defect pyrochlores

K R  Whittle; G R  Lumpkin; Sharon Elizabeth Ashbrook

doi:10.1016/j.jssc.2005.11.011

Neutron diffraction and MAS NMR of Cesium Tungstate defect pyrochlores

K R Whittle
, G R Lumpkin
, Sharon Elizabeth Ashbrook

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

Abstract

Defect-pyrochlores based on the formulation CsM0 W-5(1) O-5(6) (M = Ti, Ti/Zr, Zr and Hf) have been studied using neutron diffraction and magic-angle spinning nuclear magnetic resonance (MAS NMR). The results show that structural changes are linearly linked to the change in ionic-radius for the B-site, e.g. the unit cell changes from 10.2763 angstrom for CsTi0.5W1.5O6 to 10.3820 angstrom for CsZr0 W-4(1) O-6(6). Changes in the NMR chemical shift correlate with the change in electronegativity on the B-site, and show the presence of only one Cs crystal site. (C) 2005 Elsevier Inc. All rights reserved.

Original language	English
Pages (from-to)	512-521
Number of pages	10
Journal	Journal of Solid State Chemistry
Volume	179
Issue number	2
DOIs	https://doi.org/10.1016/j.jssc.2005.11.011
Publication status	Published - Feb 2006

Keywords

defect pyrochlore
Cs-133 MAS NMR
EFFECTIVE IONIC-RADII
CONDUCTIVITY
OXIDES
ORDER

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@article{81195ae7192e447091b04a07f1bc6bb6,

title = "Neutron diffraction and MAS NMR of Cesium Tungstate defect pyrochlores",

abstract = "Defect-pyrochlores based on the formulation CsM0 W-5(1) O-5(6) (M = Ti, Ti/Zr, Zr and Hf) have been studied using neutron diffraction and magic-angle spinning nuclear magnetic resonance (MAS NMR). The results show that structural changes are linearly linked to the change in ionic-radius for the B-site, e.g. the unit cell changes from 10.2763 angstrom for CsTi0.5W1.5O6 to 10.3820 angstrom for CsZr0 W-4(1) O-6(6). Changes in the NMR chemical shift correlate with the change in electronegativity on the B-site, and show the presence of only one Cs crystal site. (C) 2005 Elsevier Inc. All rights reserved.",

keywords = "defect pyrochlore, Cs-133 MAS NMR, EFFECTIVE IONIC-RADII, CONDUCTIVITY, OXIDES, ORDER",

author = "Whittle, \{K R\} and Lumpkin, \{G R\} and Ashbrook, \{Sharon Elizabeth\}",

year = "2006",

month = feb,

doi = "10.1016/j.jssc.2005.11.011",

language = "English",

volume = "179",

pages = "512--521",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press/Elsevier ",

number = "2",

}

TY - JOUR

T1 - Neutron diffraction and MAS NMR of Cesium Tungstate defect pyrochlores

AU - Whittle, K R

AU - Lumpkin, G R

AU - Ashbrook, Sharon Elizabeth

PY - 2006/2

Y1 - 2006/2

N2 - Defect-pyrochlores based on the formulation CsM0 W-5(1) O-5(6) (M = Ti, Ti/Zr, Zr and Hf) have been studied using neutron diffraction and magic-angle spinning nuclear magnetic resonance (MAS NMR). The results show that structural changes are linearly linked to the change in ionic-radius for the B-site, e.g. the unit cell changes from 10.2763 angstrom for CsTi0.5W1.5O6 to 10.3820 angstrom for CsZr0 W-4(1) O-6(6). Changes in the NMR chemical shift correlate with the change in electronegativity on the B-site, and show the presence of only one Cs crystal site. (C) 2005 Elsevier Inc. All rights reserved.

AB - Defect-pyrochlores based on the formulation CsM0 W-5(1) O-5(6) (M = Ti, Ti/Zr, Zr and Hf) have been studied using neutron diffraction and magic-angle spinning nuclear magnetic resonance (MAS NMR). The results show that structural changes are linearly linked to the change in ionic-radius for the B-site, e.g. the unit cell changes from 10.2763 angstrom for CsTi0.5W1.5O6 to 10.3820 angstrom for CsZr0 W-4(1) O-6(6). Changes in the NMR chemical shift correlate with the change in electronegativity on the B-site, and show the presence of only one Cs crystal site. (C) 2005 Elsevier Inc. All rights reserved.

KW - defect pyrochlore

KW - Cs-133 MAS NMR

KW - EFFECTIVE IONIC-RADII

KW - CONDUCTIVITY

KW - OXIDES

KW - ORDER

UR - https://www.scopus.com/pages/publications/31044448665

U2 - 10.1016/j.jssc.2005.11.011

DO - 10.1016/j.jssc.2005.11.011

M3 - Article

SN - 0022-4596

VL - 179

SP - 512

EP - 521

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 2

ER -

Neutron diffraction and MAS NMR of Cesium Tungstate defect pyrochlores

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Keywords

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