| 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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Monnier, Judith
Agence Nationale de la Recherche
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (35/35 displayed)
- 2024High-temperature stability of chemically architectured high entropy alloys studied by X-ray diffraction and diffusion modellingcitations
- 2024Liquid-phase shear exfoliation of graphite and its application as corrosion protection coating on aluminum substrate
- 2024AsTe 3 : A novel crystalline semiconductor with ultralow thermal conductivity obtained by congruent crystallization from parent glasscitations
- 2023Investigations of the Mn–Ni–Sm ternary system by means of anomalous X-ray diffraction, X-ray absorption and DFT calculations
- 2022Quantification of stacking faults in ANiy (A = rare earth or Mg, y = 3.5 and 3.67) hydrogen storage materialscitations
- 2022Chemically architectured alloys: How interphase width influences the strengtheningcitations
- 2020Investigation of H Sorption and Corrosion Properties of Sm2MnxNi7−x (0 ≤ x < 0.5) Intermetallic Compounds Forming Reversible Hydridescitations
- 2020Correlations between stacked structures and weak itinerant magnetic properties of La2−xYxNi7 compoundscitations
- 2020Chemical architecturation of high entropy alloys through powder metallurgycitations
- 2018Improved ZT in ball‐milled and spark plasma sintered Cu 15 As 30 Te 55 glass ceramicscitations
- 2018Stabilization of Metastable Thermoelectric Crystalline Phases by Tuning the Glass Composition in the Cu–As–Te Systemcitations
- 2018Stabilization of Metastable Thermoelectric Crystalline Phases by Tuning the Glass Composition in the Cu–As–Te Systemcitations
- 2017Thermoelectric properties and stability of glasses in the Cu-As-Te systemcitations
- 2017Thermoelectric properties and stability of glasses in the Cu-As-Te systemcitations
- 2017Stabilization of Metastable Thermoelectric Crystalline Phases by Tuning the Glass Composition in the Cu–As–Te Systemcitations
- 2016Relationship between H2 sorption properties and aqueous corrosion mechanisms in A2Ni7 hydride forming alloys (A = Y, Gd or Sm)citations
- 2016Relationship between H2 sorption properties and aqueous corrosion mechanisms in A2Ni7 hydride forming alloys (A = Y, Gd or Sm)citations
- 2016Fast and scalable preparation of tetrahedrite for thermoelectrics via glass crystallizationcitations
- 2016Low-Temperature Transport Properties of Bi-Substituted b-As2Te3 Compoundscitations
- 2016Electronic structure, low-temperature transport and thermodynamic properties of polymorphic b-As2Te3citations
- 2016Low-Temperature Transport Properties of Bi-Substituted β-As 2 Te 3 Compoundscitations
- 2016Electronic structure, low-temperature transport and thermodynamic properties of polymorphic β-As 2 Te 3citations
- 2015Electrochemical Properties and Dissolution Mechanism of A2Ni7 Hydrides (A=Y, Gd, La–Sm)citations
- 2015Structural and Hydrogen Storage Properties of Y<inf>2</inf>Ni<inf>7</inf> Deuterides Studied by Neutron Powder Diffractioncitations
- 2015Effective medium theory based modeling of the thermoelectric properties of composites: comparison between predictions and experiments in the glass-crystal composite system Si10As15Te75–Bi0.4Sb1.6Te3citations
- 2015Electrochemical Properties and Dissolution Mechanism ofA2Ni7 Hydrides (A=Y, Gd, La–Sm)citations
- 2015Structural and Hydrogen Storage Properties of Y 2 Ni 7 Deuterides Studied by Neutron Powder Diffractioncitations
- 2015Effective medium theory based modeling of the thermoelectric properties of composites: comparison between predictions and experiments in the glass-crystal composite system Si 10 As 15 Te 75 –Bi 0.4 Sb 1.6 Te 3citations
- 2015Structural and hydrogen storage properties of Y2Ni7 deuterides studied by neutron powder diffractioncitations
- 2014The benefit of the European User Community from transnational access to national radiation facilitiescitations
- 2013A comprehensive study of the crystallization of Cu-As-Te glasses: microstructure and thermoelectric propertiescitations
- 2013Mechanical milling and SPS used to obtain GeS2-βGeS2 infrared glass-ceramiccitations
- 2013Thermal stability and thermoelectric properties of Cu x As 40−x Te 60−y Se y semiconducting glassescitations
- 2012Investigation of the Mechanisms Involved in the Sintering of Chalcogenide Glasses and the Preparation of Glass-Ceramics by Spark Plasma Sinteringcitations
- 2011An innovative approach to develop highly performant chalcogenide glasses and glass-ceramics transparent in the infrared range.citations
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article
Electronic structure, low-temperature transport and thermodynamic properties of polymorphic b-As2Te3
Abstract
b-As2Te3 belongs to the prominent family of Bi2Te3-based materials, which show excellent thermoelectric properties near room temperature. In this study, we report a joint theoretical and experimental investigation of its electronic and thermal properties at low temperatures (5-300 K). These results are complemented by specific heat measurements (1.8-300 K) that provide further experimental evidence of the first order lattice distortion undergone by b-As2Te3 near 190 K. Data taken on cooling and heating across this transition show that the lattice distortion has little influence on the electronic properties and further evidence a weak hysteretic behavior. Although first-principles calculations predict a semiconducting ground state, these measurements show that b-As2Te3 behaves as a degenerate p-type semiconductor with a high carrier concentration of 1020 cm-3 at 300 K likely due to intrinsic defects. Calculations of the vibrational properties indicate that the extremely low lattice thermal conductivity values (0.8 W m-1 K-1 at 300 K) mainly originate from low-energy Te optical modes that limit the energy window of the acoustic branches. This limited ability to transport heat combined with a relatively large band gap suggest that high thermoelectric efficiency could be achieved in this compound when appropriately doped.