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Nanomaterials 2015, 5(1), 26-35; doi:10.3390/nano5010026

Synthesis, Characterization, and Mechanism of Formation of Janus-Like Nanoparticles of Tantalum Silicide-Silicon (TaSi2/Si)

1
Institute of Physical Materials Science, Siberian Branch of the Russian Academy of Sciences, Sakhyanovoy str., 6, Ulan-Ude 670047, Russia
2
Department of Physics and Engineering, Buryat State University, Smolina str., 24a, Ulan-Ude 670000, Russia
3
Institute of Applied and Theoretical Mechanics, Siberian Branch of the Russian Academy of Sciences, Institutskaya str., 4/1, Novosibirsk 630090, Russia
4
Department of Physics, Novosibirsk State University, Pirogova str., 2, Novosibirsk 630090, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas Nann
Received: 21 October 2014 / Accepted: 15 December 2014 / Published: 25 December 2014
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Abstract

Metal-semiconductor Janus-like nanoparticles with the composition tantalum silicide-silicon (TaSi2/Si) were synthesized for the first time by means of an evaporation method utilizing a high-power electron beam. The composition of the synthesized particles were characterized using high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), selective area electron diffraction (SAED), and energy dispersive X-ray fluorescence (EDX) analysis. The system is compared to previously synthesized core-shell type particles in order to show possible differences responsible for the Janus-like structure forming instead of a core-shell architecture. It is proposed that the production of Janus-like as opposed to core-shell or monophase particles occurs due to the ability of Ta and Si to form compounds and the relative content of Ta and Si atoms in the produced vapour. Based on the results, a potential mechanism of formation for the TaSi2/Si nanoparticles is discussed. View Full-Text
Keywords: Janus-like; nanoparticles; XRD analysis; mechanism of formation; TaSi2/Si Janus-like; nanoparticles; XRD analysis; mechanism of formation; TaSi2/Si
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Nomoev, A.V.; Bardakhanov, S.P.; Schreiber, M.; Bazarova, D.Z.; Baldanov, B.B.; Romanov, N.A. Synthesis, Characterization, and Mechanism of Formation of Janus-Like Nanoparticles of Tantalum Silicide-Silicon (TaSi2/Si). Nanomaterials 2015, 5, 26-35.

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