English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Thermoelectric properties of single- and polycrystalline RuGa3

MPS-Authors
/persons/resource/persons126897

Wagner,  M.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126561

Cardoso-Gil,  R.
Raul Cardoso, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126806

Prots,  Yu.
Yuri Prots, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126838

Schnelle,  W.
Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126626

Grin,  Yu.
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Wagner, M., Cardoso-Gil, R., Prots, Y., Schnelle, W., & Grin, Y. (2014). Thermoelectric properties of single- and polycrystalline RuGa3. Solid State Sciences, 32, 56-60. doi:10.1016/j.solidstatesciences.2014.03.016.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-D18C-1
Abstract
The thermoelectric properties of the intermetallic semiconductor RuGa3 are investigated. Large single crystals were grown to study intrinsic properties. To investigate the influence of grain boundaries in this system, the single crystals were ground to powder and densified using spark plasma sintering treatment. The initial chemical composition is maintained with the introduction of grain boundaries. Electrical resistivity data show semiconducting behavior for single- and polycrystalline samples. The high thermal conductivity (>500 W K-1 m(-1)) obtained for single crystals at low temperatures is reduced by a factor of 10 in the polycrystalline specimen. The thermopower shows a change between n-type and p-type behavior with a sharp minimum of about -700 mu V K-1 at 38 K for single crystals, which is completely suppressed by the introduction of grain boundaries. A comparison with RuIn3 shows the potential of RuGa3 as a thermoelectric material in its single- and polycrystalline form. (C) 2014 Elsevier Masson SAS. All rights reserved.