Magnetism, spintronics

Selection of ferromagnetic nanoparticles in the process of synthesis of perfect and defective carbon nanotubes by a catalytic method

E. I. Kunitsyna^ab, E. V. Dvoretskaya^a, A. D. Talantsev^a, V. V. Savin^b, R. B. Morgunov<sup>abc

a</sup> Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, Moscow region
^b Immanuel Kant Baltic Federal University, Kaliningrad
^c Tambov State Technical University

Abstract: It was found that nanotubes with defects contain larger core-shell Fe/Fe$_3$O$_4$ particles with a higher coercive force than perfect nanotubes, but the relative proportion of such particles is 4 times smaller in defective nanotubes, all other conditions being equal (growth rate in butanol, temperature).

Keywords: core-shell particles, nanocomposites, Raman spectroscopy, chemical vapor deposition, carbon nanotube fibers.

Received: 21.11.2025
Revised: 21.11.2025
Accepted: 23.11.2025

DOI: 10.61011/FTT.2025.11.62139.329-25

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