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Thermoelectric nanocrystalline YbCoSb laser prepared layers
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SYSNO ASEP 0470066 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Thermoelectric nanocrystalline YbCoSb laser prepared layers Author(s) Jelínek, Miroslav (FZU-D) RID, ORCID
Zeipl, Radek (FZU-D) RID
Kocourek, Tomáš (FZU-D) RID, ORCID, SAI
Remsa, Jan (FZU-D) RID, ORCID
Navrátil, Jiří (UMCH-V) RIDNumber of authors 5 Article number 155 Source Title Applied Physics A - Materials Science & Processing. - : Springer - ISSN 0947-8396
Roč. 122, č. 3 (2016), s. 1-5Number of pages 5 s. Language eng - English Country DE - Germany Keywords nanocrystalline YbCoSb ; thermoelectric layers ; pulsed laser deposition Subject RIV BM - Solid Matter Physics ; Magnetism Subject RIV - cooperation Institute of Macromolecular Chemistry - Inorganic Chemistry R&D Projects GA13-33056S GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 ; UMCH-V - RVO:61389013 UT WOS 000371041700014 EID SCOPUS 85007236144 DOI 10.1007/s00339-016-9685-7 Annotation Filled thermoelectric YbxCo4Sb12 layers were prepared by pulsed laser deposition method. The Yb0.19Co4Sb12 target was fabricated by hot pressing. Various deposition conditions were tested: target-substrate distance d(T-S) (4 or 6 cm), ambient argon pressure (from 0.5 to 13 Pa), laser repetition rate (from 3 to 10 Hz), substrate temperature (from 250 to 400 degrees C) and laser fluence (in region from 0.8 to 5 J cm(-2)). Film roughness was determined by mechanical profilometer and by AFM. For d(T-S) = 4 cm we observed a deficit of Yb and surplus of Co. Sb was transferred from target to film roughly stoichiometrically (as measured by EDX). Films created at 0.8 J cm(-2) exhibited generally poor stoichiometry and mechanical properties. Optimal conditions and stoichiometric transport were found for d(T-S) = 6 cm and 13 Pa of Ar. XRD shows that the films were nanocrystalline with CoSb3 structure. Grain size was in the range of similar to 50-80 nm. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2017
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