Nanograined n- and p-type chalcopyrite CuFeS.sub.2./sub. prepared by mechanochemical synthesis and sintered by SPS

0536157 - FZÚ 2021 RIV PL eng J - Journal Article
Levinský, Petr - Hejtmánek, Jiří - Knížek, Karel - Pashchenko, Mariia - Navrátil, Jiří - Masschelein, P. - Dutková, E. - Baláž, P.
Nanograined n- and p-type chalcopyrite CuFeS₂ prepared by mechanochemical synthesis and sintered by SPS.
Acta Physica Polonica A. Roč. 137, č. 5 (2020), s. 904-907. ISSN 0587-4246. E-ISSN 1898-794X
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR GA18-12761S
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : chalcopyrite * antiferromagnet * nanograin * thermoelectrics
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 0.577, year: 2020
Method of publishing: Open access
https://doi.org/10.12693/APhysPolA.137.904

Chalcopyrite CuFeS2, a ternary semiconductor, is an antiferromagnet with a promising thermoelectricpotential. Since the thermoelectric efficiency of CuFeS2 is generally limited by high lattice thermal conductivity,it is highly desirable to lower the thermal conductivity without deterioration of other thermoelectric character-istics. Considering the interconnection between thermal conductivity, magnetic order and grain size in magneticceramics, we attempted to produce doped nanostructured chalcopyrite via mechanosynthesis and SPS sintering.We succeeded to prepare bothn-andp-type nanostructured ceramics. We discussed the origin of highly depressedthermal conductivity with respect to the grain size and the magnetic properties, and confirm the high technologi-cal potential of high-energy milling with respect to thermoelectric potential of CuFeS2.
Permanent Link: http://hdl.handle.net/11104/0313978