Low Temperature Physics: 43, 625 (2017); https://doi.org/10.1063/1.4985218
Fizika Nizkikh Temperatur: Volume 43, Number 5 (May 2017), p. 782-788    ( to contents , go back )

Magnetic properties of the carbon-metal complexes C–Ni

V.V. Chabanenko1, E.E. Zubov2, A. Nabiałek3, R.O. Kochkanjan4, R. Escudero5, F. Morales5, F. Pérez-Rodríguez6, S. Zolotar1, and R. Puźniak3

1O.O. Galkin Donetsk Institute for Physics and Engineering NAS of Ukraine, Kyiv 03680, Ukraine
E-mail: vikchabanenko@gmail.com

2G.V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Boulevard, Kyiv 03680, Ukraine

3Institute of Physics, PAS, 32/46, al. Lotników, Warsaw 02–668, Poland

4Институт физико-органической химии и углехимии НАНУ им. Л.М. Литвиненко ул. Харьковское шоссе, 50, г. Киев, 02160, Украина

5Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, DF, México

6Instituto de Física, Benemérita Universidad Autónoma de Puebla, Apdo. Post. J-48, Puebla, Pue. 72570, México

Received September 30, 2016

Abstract

A new method for the metallization of graphite by clusters of metal atoms for producing carbon-metal C–Ni nanocomplexes was applied. Measurements of the magnetic properties of the samples reveal strongly nonequilibrium behavior of the magnetization in the case of cooling in a magnetic field and without it. The model of superparamagnetic particles to explain the behaviour of nanocomplexes’ magnetic properties was used. Under this model, the anisotropy was determined and the characteristic size of the nanoparticles was evaluated.

PACS: 62.23.St Complex nanostructures, including patterned or assembled structures;
PACS: 75.20.–g Diamagnetism, paramagnetism, and superparamagnetism;
PACS: 75.40.Gb Dynamical properties (dynamical susceptibility, spin waves, spin diffusion, dynamical scaling, etc.);
PACS: 81.16.Be Chemical synthesis methods.

Key words: chemical metallization of graphite, carbon-metal clusters, nonequilibrium magnetic behavior, superparamagnetic model, nanoparticles.

Published online: March 24, 2017

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