Academic Journal
The composite structure of mixed τ-(Ag, Cu) V2O5 bronzes—Evidence for T dependant guest-species ordering and mobility
| العنوان: | The composite structure of mixed τ-(Ag, Cu) V2O5 bronzes—Evidence for T dependant guest-species ordering and mobility |
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| المؤلفون: | Hermes, Wilfred, Dollé, Mickaël, Rozier, Patrick, Lidin, Sven |
| المساهمون: | Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 0022-4596. |
| بيانات النشر: | HAL CCSD Elsevier |
| سنة النشر: | 2013 |
| المجموعة: | Université Toulouse III - Paul Sabatier: HAL-UPS |
| مصطلحات موضوعية: | Cu, Ag bronze, Modulated composite, Ionic transport, [CHIM.MATE]Chemical Sciences/Material chemistry |
| الوصف: | International audience ; The complex structural behavior of τ-[AgCu]∼0.92V4O10 has been elucidated by single crystal X-ray diffraction and thermal analysis. The τ-phase region is apparently composed of several distinct phases and this study identifies at least three: τ1rt, τ2rt and τlt. τ1rt and τ2rt have slightly different compositions and crystal habits. Both phases transform to τlt at low temperature. The room temperature modification τ1rt crystallizes in an incommensurately modulated structure with monoclinic symmetry C2(0β1/2) [equivalent to no 5.4, B2(01/2γ) in the Intnl. Tables for Crystallography, Volume C] and the cell parameters a=11.757(4)Å, b=3.6942(5)Å c=9.463(2)Å β=114.62(2)° and the q-vector (00.921/2), but it is more convenient to transform this to a setting with a non-standard centering X=(1/21/200; 001/21/2; 1/21/21/21/2;) and an axial q vector (00.920). The structure features a vanadate host lattice with Cu and Ag guests forming an incommensurate composite. The structural data indicates perfect Ag/Cu ordering. At low temperature this modification is replaced by a triclinic phase characterized by two independent q-vectors. The τ2rt phase is similar to the low temperature modification τlt but the satellite reflections are generally more diffuse. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | hal-04492713; https://hal.science/hal-04492713; https://hal.science/hal-04492713/document; https://hal.science/hal-04492713/file/Hermes_2013.pdf |
| DOI: | 10.1016/j.jssc.2012.11.029 |
| الاتاحة: | https://hal.science/hal-04492713 https://hal.science/hal-04492713/document https://hal.science/hal-04492713/file/Hermes_2013.pdf https://doi.org/10.1016/j.jssc.2012.11.029 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.FB2DF417 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.jssc.2012.11.029 |
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