Mechanochemically Synthesized CuFeSe₂ Nanoparticles and Their Properties

• Authors: E. Dutková , I. Škorvánek , M. Sayagués , A. Zorkovská , J. Kováč , P. Baláž
• Languages of publication: 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

81.05.Hd; 81.07.Wx; 81.20.Wk

Discipline

• 81.05.Hd: Other semiconductors
• 81.20.Wk: Machining, milling
• 81.07.Wx: Nanopowders

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 1156-1158

Dates

published

2017-04

Contributors

author

E. Dutková

• Institute of Geotechnics, SAS, Watsonova 45, 040 01 Košice, Slovakia

author

I. Škorvánek

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia

author

M. Sayagués

• Institute of Material Science of Seville (CSIC-US), 410-92 Seville, Spain

author

A. Zorkovská

• Institute of Geotechnics, SAS, Watsonova 45, 040 01 Košice, Slovakia

author

J. Kováč

• Institute of Electronics and Photonics, Slovak University of Technology and International Laser Centre, 812 19 Bratislava, Slovakia

author

P. Baláž

• Institute of Geotechnics, SAS, Watsonova 45, 040 01 Košice, Slovakia

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Identifiers

DOI

10.12693/APhysPolA.131.1156