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2017 | 131 | 4 | 1156-1158
Article title

Mechanochemically Synthesized CuFeSe₂ Nanoparticles and Their Properties

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EN
Abstracts
EN
The mechanochemical synthesis of nanocrystalline CuFeSe₂ particles prepared by high-energy milling in a planetary mill in an argon atmosphere from copper, iron, and selenium for 60 min is reported for the first time. The CuFeSe₂ nanoparticles crystallize in tetragonal structure with mean crystallite size of about 32±1 nm. High resolution transmission electron microscopy measurements confirmed the presence of agglomerates which are formed by small nanocrystalline domains (5-40 nm). The magnetic data revealed that paramagnetic CuFeSe₂ nanoparticles coexist with a small amount of ferromagnetic impurities at room temperature. The magnetic transition towards a weak ferromagnetic or ferrimagnetic behavior occurs in CuFeSe₂ at approximately 79 K. The band gap of the CuFeSe₂ particles is 0.95 eV which is wider than the band gap in bulk materials (0.16 eV), which could be in many aspects of application more beneficial.
Keywords
EN
Publisher

Year
Volume
131
Issue
4
Pages
1156-1158
Physical description
Dates
published
2017-04
Contributors
author
  • Institute of Geotechnics, SAS, Watsonova 45, 040 01 Košice, Slovakia
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia
author
  • Institute of Material Science of Seville (CSIC-US), 410-92 Seville, Spain
author
  • Institute of Geotechnics, SAS, Watsonova 45, 040 01 Košice, Slovakia
author
  • Institute of Electronics and Photonics, Slovak University of Technology and International Laser Centre, 812 19 Bratislava, Slovakia
author
  • Institute of Geotechnics, SAS, Watsonova 45, 040 01 Košice, Slovakia
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv131n4179kz
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