| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Nowiński, Jan
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2016Dependence of a glass transition temperature on a heating rate in DTA experiments for glasses containing transition metal oxidescitations
- 2016Nanocrystallisation in vanadate phosphate and lithium iron vanadate phosphate glassescitations
- 2015High electronic conductivity in nanostructured materials based on lithium-iron-vanadate-phosphate glassescitations
- 2013Isothermal nanocrystallization of vanadate-phosphate glassescitations
- 2013Novel vanadium-doped olivine-like nanomaterials with high electronic conductivitycitations
- 2011DSC and electrical conductivity studies on superionic all-glass phosphate-based composites
- 2011Electrical properties of the all-glass composite silver ion conductorscitations
- 2011Electrical properties and thermal stability of FePO4 glasses and nanomaterialscitations
- 2011Electrical properties vs. microstructure of nanocrystallized V2O5–P2O5 glasses — An extended temperature range studycitations
- 2011Electrical conductivity and phase transformations in the composite ionic conductors AgI : α-Al2O3 prepared via a high-pressure routecitations
- 2009Novel nanomaterials based on electronic and mixed conductive glassescitations
- 2009Correlation between electrical properties and microstructure of nanocrystallized V2O5–P2O5 glassescitations
- 2008Electrical properties and microstructure of glassy-crystalline Ag+-ion conducting composites synthesized by a high-pressure methodcitations
- 2007Nanocrystallization as a method of improvement of electrical properties and thermal stability of V2O5-rich glassescitations
- 2007Conductivity, thermal behavior and microstructure of new composites based on AgI–Ag2O–B2O3 glasses with Al2O3 matrixcitations
- 2006Conductivity and microstructure of silver borate glass/zirconia composites, prepared via a high pressure route
- 2006Effect of nanocrystallization on the electronic conductivity of vanadate-phosphate glassescitations
- 2006Crystallization processes in superionic AgI-Ag20-P205 ([Ag2O]/[P2O5] = 3) glasses
- 2004Enhancement of electrical conductivity in lithium vanadate glasses by nanocrystallizationcitations
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article
Effect of nanocrystallization on the electronic conductivity of vanadate-phosphate glasses
Abstract
Electronically conducting glasses of the composition xV2O5·(100 - x)P2O5 for 60 < x < 90 were prepared. The glasses of the composition corresponding to x = 90 exhibited the highest electrical conductivity and they were studied in more detail. The effects of the annealing of the samples on their electrical conductivity, structure and other characteristics were studied by impedance spectroscopy, X-ray diffractometry, DSC and SEM microscopy. It was shown that, at temperatures close to the crystallization temperature Tc (determined from DSC), these glasses turned into nanomaterials consisting of crystalline grains of V2O5 (average size 25-35 nm) embedded in the glassy matrix. Their electrical conductivity was higher and the temperature stability was better than those of the starting glasses. It is postulated that the major role in this conductivity enhancement is played by the interfacial regions between crystalline and amorphous phases. The annealing at temperatures exceeding Tc led to massive crystallization and to a conductivity drop. The XRD and SEM observations have shown that the material under study undergoes structural changes: from amorphous at the beginning, to partly crystalline after the annealing at 340 °C and to polycrystalline after the annealing at 530 °C. The obtained results are in agreement with those of our earlier studies on mixed electronic-ionic conducting glasses of the ternary Li2O-V2O5-P2O5 system. © 2006.