Thermal structural properties of calcium tungstate
The results of in situ temperature-resolved powder diffraction studies of CaWO4 scheelite using both synchrotron radiation and neutron scattering are reported. The studies performed over a broad temperature range of 5-1773 K confirm the scheelite type of structure for calcium tungstate over the whol...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Published: |
2011
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| _version_ | 1797062026816651264 |
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| author | Senyshyn, A Hoelzel, M Hansen, T Vasylechko, L Mikhailik, V Kraus, H Ehrenberg, H |
| author_facet | Senyshyn, A Hoelzel, M Hansen, T Vasylechko, L Mikhailik, V Kraus, H Ehrenberg, H |
| author_sort | Senyshyn, A |
| collection | OXFORD |
| description | The results of in situ temperature-resolved powder diffraction studies of CaWO4 scheelite using both synchrotron radiation and neutron scattering are reported. The studies performed over a broad temperature range of 5-1773 K confirm the scheelite type of structure for calcium tungstate over the whole temperature range. The anisotropy of thermal expansion in calcium tungstate as well as the rigidity of WO4 complexes have been analysed in terms of bond distances, interatomic angles and anisotropic displacement parameters. The WO4 2- complex anions showed a remarkable robustness in the whole studied temperature range, thus pointing out that the layered structure formed by two-dimensional CsCl-type arrangements of Ca cations and WO4 complexes is the primary reason for the anisotropy of thermal expansion in calcium tungstate. © 2011 International Union of Crystallography Printed in Singapore - all rights reserved. |
| first_indexed | 2024-03-06T20:39:39Z |
| format | Journal article |
| id | oxford-uuid:33d7e0f7-5766-4805-89f4-88c31c8fcf98 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T20:39:39Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:33d7e0f7-5766-4805-89f4-88c31c8fcf982022-03-26T13:22:33ZThermal structural properties of calcium tungstateJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:33d7e0f7-5766-4805-89f4-88c31c8fcf98Symplectic Elements at Oxford2011Senyshyn, AHoelzel, MHansen, TVasylechko, LMikhailik, VKraus, HEhrenberg, HThe results of in situ temperature-resolved powder diffraction studies of CaWO4 scheelite using both synchrotron radiation and neutron scattering are reported. The studies performed over a broad temperature range of 5-1773 K confirm the scheelite type of structure for calcium tungstate over the whole temperature range. The anisotropy of thermal expansion in calcium tungstate as well as the rigidity of WO4 complexes have been analysed in terms of bond distances, interatomic angles and anisotropic displacement parameters. The WO4 2- complex anions showed a remarkable robustness in the whole studied temperature range, thus pointing out that the layered structure formed by two-dimensional CsCl-type arrangements of Ca cations and WO4 complexes is the primary reason for the anisotropy of thermal expansion in calcium tungstate. © 2011 International Union of Crystallography Printed in Singapore - all rights reserved. |
| spellingShingle | Senyshyn, A Hoelzel, M Hansen, T Vasylechko, L Mikhailik, V Kraus, H Ehrenberg, H Thermal structural properties of calcium tungstate |
| title | Thermal structural properties of calcium tungstate |
| title_full | Thermal structural properties of calcium tungstate |
| title_fullStr | Thermal structural properties of calcium tungstate |
| title_full_unstemmed | Thermal structural properties of calcium tungstate |
| title_short | Thermal structural properties of calcium tungstate |
| title_sort | thermal structural properties of calcium tungstate |
| work_keys_str_mv | AT senyshyna thermalstructuralpropertiesofcalciumtungstate AT hoelzelm thermalstructuralpropertiesofcalciumtungstate AT hansent thermalstructuralpropertiesofcalciumtungstate AT vasylechkol thermalstructuralpropertiesofcalciumtungstate AT mikhailikv thermalstructuralpropertiesofcalciumtungstate AT kraush thermalstructuralpropertiesofcalciumtungstate AT ehrenbergh thermalstructuralpropertiesofcalciumtungstate |