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Synthesis, structure, thermal, transport and magnetic properties of VN ceramics
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SYSNO ASEP 0470913 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Synthesis, structure, thermal, transport and magnetic properties of VN ceramics Author(s) Huber, Š. (CZ)
Jankovský, O. (CZ)
Sedmidubský, D. (CZ)
Luxa, J. (CZ)
Klimová, K. (CZ)
Hejtmánek, Jiří (FZU-D) RID, ORCID
Sofer, Z. (CZ)Number of authors 7 Source Title Ceramics International. - : Elsevier - ISSN 0272-8842
Roč. 42, č. 16 (2016), s. 18779-18784Number of pages 6 s. Language eng - English Country GB - United Kingdom Keywords vanadium mononitride ; phase transition ; electronic structure ; heat capacity ; transport properties Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GA13-20507S GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 UT WOS 000388542700108 EID SCOPUS 84995380309 DOI 10.1016/j.ceramint.2016.09.019 Annotation We present a detailed study investigating structure, thermal, transport and magnetic properties of vanadium mononitride. Pure vanadium mononitride ceramics with a stoichiometry very close to ideal composition VN was synthesized by ammonolysis of ammonium vanadate followed by sintering in NH3/N2 atmosphere. The detailed chemical and thermochemical analysis as well as transport properties measurement reveal stoichiometric composition of VN. The low temperature electrical and thermal transport measurements show superconducting transition at 8 K, a gradual structural phase transition below 250 K and a high temperature phase decomposition accompanied by V2N formation. The electronic structure calculations are correlated with the analysis of transport and thermal properties revealing an essential role of electron-phonon coupling and strong anharmonic effects. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2017
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