Aggregate stability and magnetic characteristics of colloidal FemOn–SiO2 particles obtained by sol–gel method
- Авторы: Vezo O.S.1, Gareev K.G.2, Korolev D.V.3, Kuryshev I.A.2, Lebedev S.V.1, Moshnikov V.A.2, Sergienko E.S.1, Kharitonskii P.V.1,2
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Учреждения:
- St. Petersburg State University
- St. Petersburg Electrotechnical University
- Federal Almazov North-West Medical Research Centre
- Выпуск: Том 59, № 5 (2017)
- Страницы: 1008-1013
- Раздел: Low-Dimensional Systems
- URL: https://ogarev-online.ru/1063-7834/article/view/200248
- DOI: https://doi.org/10.1134/S1063783417050304
- ID: 200248
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Аннотация
Composite FemOn–SiO2 particles have been obtained by precipitation of iron oxide from aqueous solution with the addition of tetraethoxysilane. The shapes and sizes of separate single particles and their aggregates have been determined by scanning electron microscopy. Changes in the stability of the colloidal suspension due to external magnetic field and the addition of NaCl have been evaluated. Based on magnetization curves obtained on a vibrating-sample magnetometer and characteristics calculated within the theoretical model of magnetostatically interacting particles, it is shown that the composite particles are superparamagnetic.
Об авторах
O. Vezo
St. Petersburg State University
Email: kggareev@yandex.ru
Россия, St. Petersburg, 199034
K. Gareev
St. Petersburg Electrotechnical University
Автор, ответственный за переписку.
Email: kggareev@yandex.ru
Россия, St. Petersburg, 197376
D. Korolev
Federal Almazov North-West Medical Research Centre
Email: kggareev@yandex.ru
Россия, St. Petersburg, 197341
I. Kuryshev
St. Petersburg Electrotechnical University
Email: kggareev@yandex.ru
Россия, St. Petersburg, 197376
S. Lebedev
St. Petersburg State University
Email: kggareev@yandex.ru
Россия, St. Petersburg, 199034
V. Moshnikov
St. Petersburg Electrotechnical University
Email: kggareev@yandex.ru
Россия, St. Petersburg, 197376
E. Sergienko
St. Petersburg State University
Email: kggareev@yandex.ru
Россия, St. Petersburg, 199034
P. Kharitonskii
St. Petersburg State University; St. Petersburg Electrotechnical University
Email: kggareev@yandex.ru
Россия, St. Petersburg, 199034; St. Petersburg, 197376
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