Percolation effects and self-organization processes in cold-pressed Bi2(Te1−xSex)3 solid solutions
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Дата
2021
DOI
doi.org/10.1016/j.matpr.2020.09.159
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
Elsevier Ltd
Анотація
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.
Опис
Ключові слова
Bi2(Te1−xSex)3 solid solutions, composition, thermoelectric properties, microhardness, percolation, self-organization
Бібліографічний опис
Percolation effects and self-organization processes in cold-pressed Bi2(Te1−xSex)3 solid solutions [Electronic resource] / E. I. Rogacheva [et al.] // Materials Today : Proceedings. – Electronic text data. – 2021. – Vol. 44, Pt. 4. – P. 3506-3510. – URL: https://www.sciencedirect.com/science/article/pii/S2214785320368565?via%3Dihub#kg005