Магнітні характеристики нанокомпозитів складу вуглець-нікель

• Datum: 2016
• Hauptverfasser: Abramov, N. V., Gorbyk, P. P., Bogatyrev, V. M.
• Format: Artikel
• Sprache: Ukrainisch
• Veröffentlicht: Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine 2016
• Online Zugang: https://surfacezbir.com.ua/index.php/surface/article/view/621
• Назва журналу: Surface

Nanocomposite particles (NCP) structure of "core-shell" composition Ni @ C were obtained by the method of pyrolytic polymer-salt systems on the basis of phenol-formaldehyde and nickel acetate. It has been shown that nanoparticles (NPs) Ni is a single-domain, the magnetization curve is shaped NCP characteristic superparamagnets and its settlements within the framework of the theory of Langevin paramagnetism in satisfactory agreement with the experimental results. It found a method based on magnetic granulometry model "core-shell" that lognormal distributed Ni NP size and have an average diameter (5 - 8) nm. It was calculated the value of the low surface Ni layer thickness with non-collinear with respect to volume, the magnetic moments. Еnsembles surface depending on the specific saturation magnetization was found and the specific area NCP of the average thickness of the carbon shell.