Magnetization of Paraffin-Based Magnetic Nanocolloids
- Авторы: Dikanskii Y.1, Ispiryan A.1, Kunikin S.1, Radionov A.1
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Учреждения:
- North-Caucasus Federal University
- Выпуск: Том 63, № 1 (2018)
- Страницы: 57-61
- Раздел: Solid State Electronics
- URL: https://journals.rcsi.science/1063-7842/article/view/200506
- DOI: https://doi.org/10.1134/S1063784218010103
- ID: 200506
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Аннотация
Using paraffin-based magnetic nanocolloids as an example, the reasons for maxima in the temperature dependence of the magnetic susceptibility of magnetic colloids have been discussed. The behavior of these dependences in a wide temperature interval has been analyzed for colloids in solid and liquid states. It has been concluded that the maximum observed at the melting point of paraffin can be attributed to freezing Brownian degrees of freedom in magnetite coarse particles, the magnetic moment of which is intimately related to the solid matrix. The second main maximum, which arises in the solid state, is explained by the superparamagnetic-magnetically hard transition of most fine particles at lower temperatures. It has been noted that the flatness of this maximum results from the polydispersity of the magnetic nanoparticle ensemble.
Об авторах
Yu. Dikanskii
North-Caucasus Federal University
Email: skunikin@yandex.ru
Россия, ul. Pushkina 1, Stavropol, 353029
A. Ispiryan
North-Caucasus Federal University
Email: skunikin@yandex.ru
Россия, ul. Pushkina 1, Stavropol, 353029
S. Kunikin
North-Caucasus Federal University
Автор, ответственный за переписку.
Email: skunikin@yandex.ru
Россия, ul. Pushkina 1, Stavropol, 353029
A. Radionov
North-Caucasus Federal University
Email: skunikin@yandex.ru
Россия, ul. Pushkina 1, Stavropol, 353029