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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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Buckman, Jim
Heriot-Watt University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023Thermoelectric properties of the aliovalent half-Heusler alloy Zn 0.5 Ti 0.5 NiSb with intrinsic low thermal conductivitycitations
- 2023Thermoelectric properties of the aliovalent half-Heusler alloy Zn0.5Ti0.5NiSb with intrinsic low thermal conductivitycitations
- 2022Unravelling the role of natural imperfections on the mechanical behaviour of cemented granular systems: insights from naturally weakly cemented sands
- 2021Evolution of meniscus structures in hydrophobic granular systemscitations
- 2019Optimizing Thermoelectric Power Factor in p-Type Hydrogenated Nano-crystalline Silicon Thin Films by Varying Carrier Concentrationcitations
- 2019Phase stability and thermoelectric properties of TiCoSb-TiM2Sn (M = Ni, Fe) Heusler compositescitations
- 2018Grain-by-grain compositional variations and interstitial metals—a new route toward achieving high performance in half-Heusler thermoelectricscitations
- 2018Analysis of Sandstone Pore Space Fluid Saturation and Mineralogy Variation via Application of Monostatic K-Band Frequency Modulated Continuous Wave Radarcitations
- 2018Hydrogenated Nano-/Micro-Crystalline Silicon Thin-Films for Thermoelectricscitations
- 2018Grain-by-grain compositional variations and interstitial metals - a new route towards achieving high performance in Half-Heusler thermoelectricscitations
- 2018Substitution versus full-Heusler segregation in TiCoSbcitations
- 2018Grain-Scale Heterogeneity in Deep Water Massive Sands – Implications for Depositional Processes and Reservoir Quality
- 2018Grain-by-Grain Compositional Variations and Interstitial Metals -: A New Route toward Achieving High Performance in Half-Heusler Thermoelectricscitations
- 2016Monitoring micro-crack healing in an engineered cementitious composite using the environmental scanning electron microscopecitations
- 2016Thermoelectric properties and high-temperature stability of the Ti1-xVxCoSb1-xSnx half-Heusler alloyscitations
Places of action
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article
Phase stability and thermoelectric properties of TiCoSb-TiM2Sn (M = Ni, Fe) Heusler composites
Abstract
Heusler composites have attracted significant attention as a new route towards improving the thermoelectric figure of merit (ZT) through reduction of the lattice thermal conductivity and carrier filtering effects. This work extends this field by investigating TiCoSb-TiM2Sn (M = Ni, Fe) composites. All end-members are stable phases but no clean segregation into half- and full-Heusler phases was observed. Instead, for M = Ni, partial substitution on the Co sublattice and n-type doping occurs, combined with the formation of Ni3Sn2 and full-Heusler phases. For M = Fe, substitution on the Co site occurs, leading to p-type conduction. Rietveld analysis of neutron powder diffraction data reveals no evidence for the presence of metals on the vacant tetrahedral site, signalling the absence of embedded Heusler inclusions. The thermoelectric properties of both series vary systematically with composition. For both n-type (M = Ni) and p-type (M = Fe) series, the highest measured power factors S2/ρ ∼ 0.8 mW m−1 K−2 leading to ZT ∼ 0.12 at 713 K. This work extends knowledge regarding the phase stability and thermoelectric properties of TiCoSb-based Heusler composites.