0440906 - ÚFM 2016 RIV GB eng J - Článek v odborném periodiku
Rogl, G. - Grytsiv, A. - Buršík, Jiří - Horky, J. - Anbalagan, R. - Bauer, E. - Mallik, R.Ch. - Rogl, P. - Zehetbauer, M.
Changes in microstructure and physical properties of skutterudites after severe plastic deformation.
Physical Chemistry Chemical Physics. Roč. 17, č. 5 (2015), s. 3715-3722. ISSN 1463-9076. E-ISSN 1463-9084
Institucionální podpora: RVO:68081723
Klíčová slova: physical properties * plastic deformation * TEM, SEM
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 4.449, rok: 2015 ; AIS: 1.158, rok: 2015
DOI: https://doi.org/10.1039/C4CP05230G

The best p-type skutterudites with ZT gt 1.1 so far are didymium (DD) filled, Fe/Co substituted, Sb-based skutterudites. DD0.68Fe3CoSb12 was prepared using an annealing–reacting–melting–quenching technique followed by ball milling and hot pressing. After severe plastic deformation via high-pressure torsion (HPT), no phase changes but particular structural variations were achieved, leading to modified transport properties with higher ZT values. Although after measurement-induced heating some of the HPT induced defects were annealed out, a still attractive ZT-value was preserved. In this paper we focus on explanations for these changes via TEM investigations, Raman spectroscopy and texture measurements.
Trvalý link: http://hdl.handle.net/11104/0246103