Influence of Oxidation on Electrical Properties of Compacted Cu Nanopowders

The phase composition and electrical transport properties of Cu powder obtained by electric spark dispersion and the pellets manufactured from this powder were studied by X-ray phase analysis and electric resistance measurements. The compacted powders were annealed in pure Ar atmosphere. It was show...

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Autores principales: Nadutov, Volodymyr, Perekos, Anatoliy, Kokorin, Volodymyr, Konoplyuk, Sergiy, Kabantsev, Taras
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2016
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5084150/
https://www.ncbi.nlm.nih.gov/pubmed/27797087
http://dx.doi.org/10.1186/s11671-016-1700-6
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author Nadutov, Volodymyr
Perekos, Anatoliy
Kokorin, Volodymyr
Konoplyuk, Sergiy
Kabantsev, Taras
author_facet Nadutov, Volodymyr
Perekos, Anatoliy
Kokorin, Volodymyr
Konoplyuk, Sergiy
Kabantsev, Taras
author_sort Nadutov, Volodymyr
collection PubMed
description The phase composition and electrical transport properties of Cu powder obtained by electric spark dispersion and the pellets manufactured from this powder were studied by X-ray phase analysis and electric resistance measurements. The compacted powders were annealed in pure Ar atmosphere. It was shown that electrical resistance of the compacted Cu specimens essentially depends on the annealing temperature. In particular, the electrical resistance of the pellet after annealing at 873 K decreases on heating at low temperatures (semiconducting mechanism). As the temperature is increased, semiconducting behavior of resistivity is altered for metallic one. This change of conductivity type is ascribed to formation of metallic oxide and modification of its content during annealing.
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spelling pubmed-50841502016-11-14 Influence of Oxidation on Electrical Properties of Compacted Cu Nanopowders Nadutov, Volodymyr Perekos, Anatoliy Kokorin, Volodymyr Konoplyuk, Sergiy Kabantsev, Taras Nanoscale Res Lett Nano Express The phase composition and electrical transport properties of Cu powder obtained by electric spark dispersion and the pellets manufactured from this powder were studied by X-ray phase analysis and electric resistance measurements. The compacted powders were annealed in pure Ar atmosphere. It was shown that electrical resistance of the compacted Cu specimens essentially depends on the annealing temperature. In particular, the electrical resistance of the pellet after annealing at 873 K decreases on heating at low temperatures (semiconducting mechanism). As the temperature is increased, semiconducting behavior of resistivity is altered for metallic one. This change of conductivity type is ascribed to formation of metallic oxide and modification of its content during annealing. Springer US 2016-10-28 /pmc/articles/PMC5084150/ /pubmed/27797087 http://dx.doi.org/10.1186/s11671-016-1700-6 Text en © The Author(s). 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Nadutov, Volodymyr
Perekos, Anatoliy
Kokorin, Volodymyr
Konoplyuk, Sergiy
Kabantsev, Taras
Influence of Oxidation on Electrical Properties of Compacted Cu Nanopowders
title Influence of Oxidation on Electrical Properties of Compacted Cu Nanopowders
title_full Influence of Oxidation on Electrical Properties of Compacted Cu Nanopowders
title_fullStr Influence of Oxidation on Electrical Properties of Compacted Cu Nanopowders
title_full_unstemmed Influence of Oxidation on Electrical Properties of Compacted Cu Nanopowders
title_short Influence of Oxidation on Electrical Properties of Compacted Cu Nanopowders
title_sort influence of oxidation on electrical properties of compacted cu nanopowders
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5084150/
https://www.ncbi.nlm.nih.gov/pubmed/27797087
http://dx.doi.org/10.1186/s11671-016-1700-6
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