Zr doped β-rhombohedral boron: widely variable Seebeck coefficient and structural properties

Sologub, Oksana; Salamakha, Leonid; Stöger, Berthold; Michiue, Yuichi; Mori, Takao

doi:10.1016/j.actamat.2016.10.014

Record link:

https://resolver.obvsg.at/urn:nbn:at:at-ubtuw:3-3289
http://hdl.handle.net/20.500.12708/870

Title:

Zr doped β-rhombohedral boron: widely variable Seebeck coefficient and structural properties

Citation:

Sologub, O., Salamakha, L., Stöger, B., Michiue, Y., & Mori, T. (2017). Zr doped β-rhombohedral boron: widely variable Seebeck coefficient and structural properties. Acta Materialia. https://doi.org/10.1016/j.actamat.2016.10.014

Publisher DOI:

10.1016/j.actamat.2016.10.014

CatalogPlus:

AC11364804

Publication Type:

Article - Original Research Article

Artikel - Original Research Article

Language:

English

Authors:

Sologub, Oksana
Salamakha, Leonid
Stöger, Berthold
Michiue, Yuichi
Mori, Takao

Organisational Unit:

E138 - Institut für Festkörperphysik

Journal:

Acta Materialia

ISSN:

1359-6454

Date (published):

2017

Publisher:

Elsevier Ltd.

Peer reviewed:

Yes

Keywords:

β-rhombohedral boron; Zr-doping; p; n transition

Abstract:

The doping effect of zirconium on the structure, Seebeck coefficient and electrical resistivity of β-rhombohedral B was studied for the metal rich concentration range ZrxB100-x, 1.88x2.75. Structural studies proved the Zr atoms mainly in E and D voids for the metal rich compositions, and also elucidated the minor Zr occupancies of the N, F and A1 holes. Seebeck coefficients were effectively shifted within a wide range of positive and negative values by varying the Zr content (p-type: Smax ~ +420 µVK-1 at 673 K for x=1.88; n-type: Smax ~ -670 VK-1 at 473 K for x=2.74). Electrical resistivities generally followed the Mott’s relation for the variable-range hopping. Excellent compositional agreement has been observed between structural and thermoelectric properties discontinuities.

Additional information:

The final publication is available via <a href="https://doi.org/10.1016/j.actamat.2016.10.014" target="_blank">https://doi.org/10.1016/j.actamat.2016.10.014</a>.

License:

In Copyright

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