Thermoelectric Properties of YMn4+xAl8-x, -2 ≤ x ≤ 2.5
Journal article, 2009

Seven samples within the series YMn 4+x Al 8 - x (-2.0 ≤ x ≤ 2.5) were synthesized using direct reaction of the elements. The thermoelectric properties of the samples were characterized by measurements of resistivity, thermal conductivity and thermopower. According to transport measurements, slight Mn-deficiency influences the electronic conductivity of the YMn 4+x Al 8 - x system, implying that the electronic structure is marginal to the metal-semiconductor boundary. Furthermore, the ZT values of the samples prepared in this study were low. Experimental results indicated that structurally ordered YMn 4 Al 8 shows metallic conductivity, whereas off-stoichiometric compounds displayed semiconductor-like behavior, at low temperatures. © 2008 Elsevier B.V. All rights reserved.

Author

Ali Saramat

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Anders Palmqvist

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Anders Bentien

Max Planck Institute

Journal of Alloys and Compounds

0925-8388 (ISSN)

Vol. 477 1-2 51-54

Subject Categories

Other Engineering and Technologies not elsewhere specified

Metallurgy and Metallic Materials

Condensed Matter Physics

DOI

10.1016/j.jallcom.2008.10.165

More information

Latest update

2/21/2018