On the skutterudite Pt 4Sn4.4Sb7.6

Autor(en)

Gerda Rogl, Andrij Grytsiv, Peter Franz Rogl, Ernst Bauer, Martin Kriegisch, Stephan Puchegger, Michael Zehetbauer

Abstrakt

Pt4Sn4.4Sb7.6 (a = 9.3304(2) Å, space group $Im\,\overline 3 $ ) is an unfilled skutterudite member of the solid solution SnxPt4SnySb 12-x. In contrast to SnxNi4Sn ySb12-y and SnxPt4Sn ySb12-x no Sn could be found in the 2a sites of the Sn/Sb framework. Physical properties have been data for Ni4Sn 3Sb9 and Ni4Sn3.5Sb8.5. Resistivity measurements for Pt4Sn4.4Sb7.6 reveal a temperature dependent crossover from metallic to semiconducting behaviour connected with a corresponding change from negative to positive thermopower at 30 K. Vicker's hardness, thermal expansion and elastic moduli compare well with values of other Sb- investigated in the temperature range from 4.2 K to 800 K and have been compared with based skutterudites.

Organisation(en)

Institut für Physikalische Chemie, Dynamik Kondensierter Systeme, Physik Nanostrukturierter Materialien

Externe Organisation(en)

Technische Universität Wien

Journal

International Journal of Modern Physics B

Band

24

Seiten

711-721

Anzahl der Seiten

11

ISSN

0217-9792

DOI

https://doi.org/10.1142/S0217979210064332

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103023 Polymerphysik, 210006 Nanotechnologie, 103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/on-the-skutterudite-pt-4sn44sb76(dd40998e-63e7-46d5-a822-dbd22d6d15f0).html