Structure of vanadium tellurite glasses studied by neutron and X-ray diffraction

U. Hoppe; E. Yousef; C. Rüssel; J. Neuefeind; A. C. Hannon

doi:10.1016/S0038-1098(02)00303-4

Structure of vanadium tellurite glasses studied by neutron and X-ray diffraction

U. Hoppe, E. Yousef, C. Rüssel, J. Neuefeind, A. C. Hannon

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

49 Scopus citations

Abstract

Details of the Te-O first-neighbor distances in V₂O₅-TeO₂ glasses were obtained by neutron diffraction experiments with a measuring range up to Q_max=400nm^-1 (Q is the magnitude of scattering vector). A sharp Te-O peak at 0.191nm and a second broad component at about 0.21nm were resolved. Quantitative analyses of the areas of both peak components for a compositional series of four samples support the model of a change of TeO₄ trigonal bipyramids to TeO₃ trigonal pyramids upon V₂O₅ additions. In glasses of up to ∼10mol% V₂O₅ each VO_n polyhedron introduced is accompanied by the formation of a TeO₃ unit. The number of TeO₃ units increases further for glasses of higher V₂O₅ concentrations but the increase is less than that of the number of V sites.

Original language	English
Pages (from-to)	273-278
Number of pages	6
Journal	Solid State Communications
Volume	123
Issue number	6-7
DOIs	https://doi.org/10.1016/S0038-1098(02)00303-4
State	Published - Aug 2002
Externally published	Yes

Funding

Financial support of the Deutsche Forschungsgemeinschaft (contract KR 1372/7-1) is gratefully acknowledged.

Funders	Funder number
Deutsche Forschungsgemeinschaft	KR 1372/7-1

Keywords

A. Disordered system
E. Neutron scattering
E. Synchrotron radiation

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10.1016/S0038-1098(02)00303-4

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title = "Structure of vanadium tellurite glasses studied by neutron and X-ray diffraction",

abstract = "Details of the Te-O first-neighbor distances in V2O5-TeO2 glasses were obtained by neutron diffraction experiments with a measuring range up to Qmax=400nm-1 (Q is the magnitude of scattering vector). A sharp Te-O peak at 0.191nm and a second broad component at about 0.21nm were resolved. Quantitative analyses of the areas of both peak components for a compositional series of four samples support the model of a change of TeO4 trigonal bipyramids to TeO3 trigonal pyramids upon V2O5 additions. In glasses of up to ∼10mol% V2O5 each VOn polyhedron introduced is accompanied by the formation of a TeO3 unit. The number of TeO3 units increases further for glasses of higher V2O5 concentrations but the increase is less than that of the number of V sites.",

keywords = "A. Disordered system, E. Neutron scattering, E. Synchrotron radiation",

author = "U. Hoppe and E. Yousef and C. R{\"u}ssel and J. Neuefeind and Hannon, {A. C.}",

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journal = "Solid State Communications",

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TY - JOUR

T1 - Structure of vanadium tellurite glasses studied by neutron and X-ray diffraction

AU - Hoppe, U.

AU - Yousef, E.

AU - Rüssel, C.

AU - Neuefeind, J.

AU - Hannon, A. C.

PY - 2002/8

Y1 - 2002/8

N2 - Details of the Te-O first-neighbor distances in V2O5-TeO2 glasses were obtained by neutron diffraction experiments with a measuring range up to Qmax=400nm-1 (Q is the magnitude of scattering vector). A sharp Te-O peak at 0.191nm and a second broad component at about 0.21nm were resolved. Quantitative analyses of the areas of both peak components for a compositional series of four samples support the model of a change of TeO4 trigonal bipyramids to TeO3 trigonal pyramids upon V2O5 additions. In glasses of up to ∼10mol% V2O5 each VOn polyhedron introduced is accompanied by the formation of a TeO3 unit. The number of TeO3 units increases further for glasses of higher V2O5 concentrations but the increase is less than that of the number of V sites.

AB - Details of the Te-O first-neighbor distances in V2O5-TeO2 glasses were obtained by neutron diffraction experiments with a measuring range up to Qmax=400nm-1 (Q is the magnitude of scattering vector). A sharp Te-O peak at 0.191nm and a second broad component at about 0.21nm were resolved. Quantitative analyses of the areas of both peak components for a compositional series of four samples support the model of a change of TeO4 trigonal bipyramids to TeO3 trigonal pyramids upon V2O5 additions. In glasses of up to ∼10mol% V2O5 each VOn polyhedron introduced is accompanied by the formation of a TeO3 unit. The number of TeO3 units increases further for glasses of higher V2O5 concentrations but the increase is less than that of the number of V sites.

KW - A. Disordered system

KW - E. Neutron scattering

KW - E. Synchrotron radiation

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DO - 10.1016/S0038-1098(02)00303-4

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SN - 0038-1098

VL - 123

SP - 273

EP - 278

JO - Solid State Communications

JF - Solid State Communications

IS - 6-7

ER -

Structure of vanadium tellurite glasses studied by neutron and X-ray diffraction

Abstract

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Keywords

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