Lien Thi Kim Nguyen, Umut Aydemir, Michael Baitinger, Jeroen Custers, Amir-Abbas Haghighirad, Rudolf Höfler, Klaus-Dieter Luther, Franz Ritter, Yuri Grin, Wolf Aßmus, Silke Paschen
- Clathrates are candidate materials for thermoelectric applications because of a number of unique properties. The clathrate I phases in the Ba-Ni-Ge ternary system allow controlled variation of the charge carrier concentration by adjusting the Ni content. Depending on the Ni content, the physical properties vary from metal-like to insulator-like and show a transition from p-type to n-type conduction. Here we present first results on the characterization of millimeter-sized single crystals grown by the Bridgman technique. Single crystals with a composition of Ba8Ni3.5Ge42.1h0.4 show metallic behavior (dp/dT > 0) albeit with high resistivity at room temperature [p (300 K) = 1 mOhm cm]. The charge carrier concentration at 300 K, as determined from Hall-effect measurements, is 2.3 e-/unit cell. The dimensionless thermoelectric figure of merit estimated at 680 K is ZT ~ 0.2. Keywords Clathrates - thermoelectric material - intermetallic compound - nickel
MetadatenAuthor: | Lien Thi Kim Nguyen, Umut Aydemir, Michael Baitinger, Jeroen CustersORCiDGND, Amir-Abbas HaghighiradORCiDGND, Rudolf Höfler, Klaus-Dieter Luther, Franz Ritter, Yuri Grin, Wolf AßmusGND, Silke PaschenORCiDGND |
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URN: | urn:nbn:de:hebis:30-72063 |
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DOI: | https://doi.org/10.1007/s11664-010-1312-3 |
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ISSN: | 1543-186X |
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ISSN: | 0361-5235 |
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Parent Title (English): | Journal of electronic materials |
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Publisher: | TMS |
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Place of publication: | Warrendale, Pa |
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Document Type: | Article |
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Language: | English |
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Year of Completion: | 2010 |
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Date of first Publication: | 2010/08/19 |
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Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
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Release Date: | 2010/09/07 |
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Tag: | clathrates; intermetallic compound; nickel; thermoelectric material |
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Volume: | 39 |
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Issue: | 9 |
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Page Number: | 4 |
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First Page: | 1386 |
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Last Page: | 1389 |
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Note: | Open Access: This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. |
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Source: | Journal of Electronic Materials, Vol. 39, No. 9, S. 1386-1389, DOI: 10.1007/s11664-010-1312-3 ; http://www.springerlink.com/content/y463763g34766472/fulltext.pdf |
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HeBIS-PPN: | 226651827 |
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Institutes: | Physik / Physik |
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Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
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Sammlungen: | Universitätspublikationen |
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Licence (English): | Creative Commons - Namensnennung-Nicht kommerziell 4.0 |
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