| 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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Bobev, Svilen
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Publications (5/5 displayed)
- 2023Synthesis, crystal and electronic structure of the Zintl phase Ba<sub>16</sub>Sb<sub>11</sub>. A case study uncovering greater structural complexity via monoclinic distortion of the tetragonal Ca<sub>16</sub>Sb<sub>11</sub> structure type.citations
- 2023The Electronic and Thermoelectric Transport Properties of Zintl Pnictidescitations
- 2021Single crystal growth and characterization of new Zintl phase Ca<SUB>9</SUB>Zn<SUB>3.1</SUB>In<SUB>0.9</SUB>Sb<SUB>9</SUB>citations
- 2021Structural Origin of Reversible Li Insertion in Guest‐Free, Type‐II Silicon Clathratescitations
- 2021Electrochemical Lithium Alloying Behavior of Guest-Free Type II Silicon Clathratescitations
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article
Single crystal growth and characterization of new Zintl phase Ca<SUB>9</SUB>Zn<SUB>3.1</SUB>In<SUB>0.9</SUB>Sb<SUB>9</SUB>
Abstract
Complex Zintl phases have yielded a large variety of promising new thermoelectric materials. In this study we report the discovery of the new Zintl phase Ca<SUB>9</SUB>(Zn<SUB>1-x</SUB>In<SUB>x</SUB>)<SUB>4</SUB>Sb<SUB>9</SUB> (x ~ 0.9), needle-like crystals of which were serendipitously obtained from an In- and Sb-rich flux. Although its composition is reminiscent of Ca<SUB>9</SUB>Zn<SUB>4+x</SUB>Sb<SUB>9</SUB>, an excellent thermoelectric material with zT > 1, the substitution of In on the Zn site leads to the formation of an entirely new structure type. Single crystal X-ray diffraction revealed a structure characterized by TSb<SUB>4</SUB> tetrahedra (T = statistically disordered Zn and In atoms) and ZnSb<SUB>3</SUB> triangular units, which share common corners to form [T<SUB>4</SUB>Sb<SUB>9</SUB>]<SUP>18-</SUP> polyanions. The average structure was found to have hexagonal symmetry. The valence electron count in this heavily-disordered structure appears to follows the Zintl-Klemm rules, suggesting semiconducting behavior. Single crystal electrical conductivity and Seebeck coefficient measurements support this conclusion, suggesting that the as-grown crystals are degenerate p-type semiconductors....