Laser Alloying of Co Nanorods and Al Nanoparticles in a Liquid

Ekaterina V Barmina; Ilya A Sukhov; Guillaume Viau; Georgy A Shafeev

doi:10.1002/cphc.201601115

Laser Alloying of Co Nanorods and Al Nanoparticles in a Liquid

Chemphyschem. 2017 May 5;18(9):1069-1073. doi: 10.1002/cphc.201601115. Epub 2017 Jan 18.

Authors

Ekaterina V Barmina¹, Ilya A Sukhov^{1

2}, Guillaume Viau³, Georgy A Shafeev^{1

4}

Affiliations

¹ Wave Research Center, A. M. Prokhorov General Physics Institute of the Russian Academy of Science, 38 Vavilov str. 1, 19991, Moscow, Russian Federation.
² Department of Problems of Physics and Energetics, Moscow Institute of Physics and Technology (State University), 9 Institutskiy per., 141700, Dolgoprudny, Moscow Region, Russian Federation.
³ Institut National des Sciences Appliqées (INSA), 20 avenue Albert Einstein, 69621, Toulouse, France.
⁴ National Research Nuclear University MEPhI, 31 Kashirskoe shosse, 115409, Moscow, Russian Federation.

PMID: 27922728
DOI: 10.1002/cphc.201601115

Abstract

Experimental results are presented on laser alloying of Co nanorods with Al spherical nanoparticles by laser exposure of their mixture in liquid ethanol. It is demonstrated that the initial morphology of the nanoparticles is modified upon laser exposure. The Co nanorods are transformed into Co nanospheres covered by a layer of Al. The evolution of the size distribution is studied as a function of the time of laser exposure. The average size of the nanoparticles has a maximum level with a corresponding optimal irradiation time. The results are discussed from the viewpoint of the interaction of molten nanoparticles inside a cavitation bubble filled with a liquid vapor.

Keywords: alloys; core-shell structures; laser; magnetic properties; nanoparticles.