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| Naji, M. |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Azevedo, Nuno Monteiro |
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| Rignanese, Gian-Marco |
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Doroshenko, A. N.
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Publications (5/5 displayed)
- 2021Percolation effects and self-organization processes in cold-pressed Bi2(Te1−xSex)3 solid solutionscitations
- 2020Transport properties of the bismuth telluride thin films with different stoichiometry in the temperature range 77-300 Kcitations
- 2020Percolation transition and physical properties of Bi1-xSbx solid solutions at low Bi concentrationcitations
- 2019Effect of Deviation from Stoichiometry on Thermoelectric Properties of Bi₂Te₃ Polycrystals and Thin Films in the Temperature Range 77-300 Kcitations
- 2019Percolation effects and self-organization processes in Bi₂(Te₁₋ₓSeₓ)₃ solid solutionscitations
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article
Percolation effects and self-organization processes in cold-pressed Bi2(Te1−xSex)3 solid solutions
Abstract
It was established that the dependences of thermoelectric and mechanical properties of cold-pressed Bi2(Te1−xSex)3 alloys on composition (x = 0–0.07) exhibit a non-monotonic behavior in certain concentration ranges: an anomalous decrease in the Seebeck coefficient, thermoelectric power factor, and microhardness, and increase in electrical conductivity with increasing x. We observed similar anomalies earlier for cast Bi2(Te1−xSex)3 alloys and explained them by percolation and self-organization phenomena. Thus, the existence of the anomalies does not depend on the method of sample preparation. However, in pressed samples as compared to cast ones conductivity type changes from p to n and thermoelectric power factor increases.