| 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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Mangler, Clemens
University of Vienna
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Grain-Size-Dependent Plastic Behavior in Bulk Nanocrystalline FeAl
- 2023Interface effects on titanium growth on graphenecitations
- 2023Creation of Single Vacancies in hBN with Electron Irradiationcitations
- 2021The morphology of doubly-clamped graphene nanoribbons
- 2014Nitrogen controlled iron catalyst phase during carbon nanotube growthcitations
- 2012Radiation effects in bulk nanocrystalline FeAl alloycitations
- 2012Spinodal decomposition in (CaxBa1-x)(y)Fe4Sb12citations
- 2011Growth of nanosized chemically ordered domains in intermetallic FeAl made nanocrystalline by severe plastic deformationcitations
- 2011Three-Dimensional Analysis by Electron Diffraction Methods of Nanocrystalline Materialscitations
- 2011Thermally induced transition from a ferromagnetic to a paramagnetic state in nanocrystalline FeAl processed by high-pressure torsioncitations
- 2010Electron microscopy of severely deformed L12 intermetallicscitations
- 2010Quantitative local profile analysis of nanomaterials by electron diffractioncitations
- 2010Structural modifications during heating of bulk nanocrystalline FeAl produced by high-pressure torsioncitations
- 2008TEM study of local disordering: a structural phase change induced by high-pressure torsioncitations
- 2004Nanostructures in L12-ordered Cu3Au processed by torsion under high pressurecitations
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article
Spinodal decomposition in (CaxBa1-x)(y)Fe4Sb12
Abstract
The thermoelectric and structural properties of a double filled skutterudite solid solution (CaxBa1-x)(y)Fe4Sb12 were investigated. Using X-ray powder and X-ray micro analyses (EPMA) an immiscibility gap was established with a critical point at x approximate to 0.45 and a critical temperature that depends on the filling level (T-C = 590 +/- 5 degrees C at y = 0.8 and T-C = 610 +/- 5 degrees C at y = 0.9). The thermoelectric properties were measured for samples prepared in four different states: (i) a single phase solid solution (CaxBa1-x)(5)Fe4Sb12; (ii) a two phase microcrystalline mixture of CayFe4Sb12 and BayFe4Sb12; (iii) a single phase structure obtained after annealing of the latter sample at 600 degrees C for 200 h; (iv) a spinodally demixed sample after annealing at 400 degrees C for 672 h. The thermoelectric properties of the phase mixture (ii) are compatible with data reported for the microcrystalline end members (CayFe4Sb12 and BayFe4Sb12), whilst the single phase (i and iii) and spinodally decomposed (iv) samples show increased thermopower and decreased thermal conductivity, similarly to those observed for nano-structured CayFe4Sb12 and BayFe4Sb12.