New anion-conducting solid solutions Bi<sub>1−<i>x</i></sub>Te<sub><i>x</i></sub>(O,F)<sub>2+<i>δ</i></sub> (<i>x</i> > 0.5) and glass-ceramic material on their base
| hal.structure.identifier | Department of Chemistry | |
| dc.contributor.author | PRITUZHALOV, V. A. | |
| hal.structure.identifier | Department of Chemistry | |
| dc.contributor.author | ARDASHNIKOVA, E. I. | |
| hal.structure.identifier | Department of Chemistry | |
| dc.contributor.author | VINOGRADOV, A. A. | |
| hal.structure.identifier | Department of Chemistry | |
| dc.contributor.author | DOLGIKH, V. A. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | VIDEAU, Jean-Jacques | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | FARGIN, Evelyne | |
| hal.structure.identifier | Electron Microscopy for Materials Science [EMAT] | |
| dc.contributor.author | ABAKUMOV, A. M. | |
| hal.structure.identifier | Electron Microscopy for Materials Science [EMAT] | |
| dc.contributor.author | TARAKINA, N. V. | |
| hal.structure.identifier | Electron Microscopy for Materials Science [EMAT] | |
| dc.contributor.author | VAN TENDELOO, Gustaaf | |
| dc.date.issued | 2011 | |
| dc.identifier.issn | 0022-1139 | |
| dc.description.abstractEn | The anion-excess fluorite-like solid solutions with general composition Bi<sub>1−<i>x</i></sub>Te<sub><i>x</i></sub>(O,F)<sub>2+<i>δ</i></sub> (<i>x</i> > 0.5) have been synthesized by a solid state reaction of TeO<sub>2</sub>, BiF<sub>3</sub> and Bi<sub>2</sub>O<sub>3</sub> at 873 K with following quenching. The homogeneity areas and polymorphism of the I ↔ IV Bi<sub>1−<i>x</i></sub>Te<sub><i>x</i></sub>(O,F)<sub>2+<i>δ</i></sub> phases were investigated. The crystal structure of the low temperature IV-Bi<sub>1−<i>x</i></sub>Te<sub><i>x</i></sub>(O,F)<sub>2+<i>δ</i></sub> phase has been solved using electron diffraction and X-ray powder diffraction (<i>a</i> = 11.53051(9) Å, S.G. <i>Ia</i>-3, <i>R</i><sub>I</sub> = 0.046, <i>R</i><sub>P</sub> = 0.041). Glass formation area in the Bi<sub>2</sub>O<sub>3</sub>-BiF<sub>3</sub>-TeO<sub>2</sub> (10% TiO<sub>2</sub>) system was investigated. IVBi<sub>1−<i>x</i></sub>Te<sub><i>x</i></sub>(O,F)<sub>2+<i>δ</i></sub> phase starts to crystallize at short-time (0.5-3 h) annealing of oxyfluoride glasses at temperatures above <i>T</i><sub>g</sub> (600-615 K). The ionic conductivity of the crystalline Bi<sub>1−<i>x</i></sub>Te<sub><i>x</i></sub>(O,F)<sub>2+<i>δ</i></sub> phase and corresponding glass-ceramics was investigated. Activation energy of conductivity <i>E</i><sub>a</sub> = 0.41(2) eV for the IV-Bi<sub>1−<i>x</i></sub>Te<sub><i>x</i></sub>(O,F)<sub>2+<i>δ</i></sub> crystalline samples and <i>E</i><sub>a</sub> = 0.73 eV for the glass-ceramic samples were obtained. Investigation of the oxyfluoride samples with a constant cation ratio demonstrates essential influence of excess fluorine anions on the ionic conductivity. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.title.en | New anion-conducting solid solutions Bi<sub>1−<i>x</i></sub>Te<sub><i>x</i></sub>(O,F)<sub>2+<i>δ</i></sub> (<i>x</i> > 0.5) and glass-ceramic material on their base | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jfluchem.2011.06.042 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Fluorine Chemistry | |
| bordeaux.page | 1110-1116 | |
| bordeaux.volume | 132 | |
| bordeaux.issue | 12 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00635928 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00635928v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Fluorine%20Chemistry&rft.date=2011&rft.volume=132&rft.issue=12&rft.spage=1110-1116&rft.epage=1110-1116&rft.eissn=0022-1139&rft.issn=0022-1139&rft.au=PRITUZHALOV,%20V.%20A.&ARDASHNIKOVA,%20E.%20I.&VINOGRADOV,%20A.%20A.&DOLGIKH,%20V.%20A.&VIDEAU,%20Jean-Jacques&rft.genre=article |
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