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Synthesis of colloidal solutions of SrFe12O19 plate-like nanoparticles featuring extraordinary magnetic-field-dependent optical transmissionстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Kushnir Sergey E., Gavrilov Anton I., Kazin Pavel E., Grigorieva Anastasia V., Tretyakov Yuri D., Martin Jansen
- Журнал: Journal of Materials Chemistry
- Том: 22
- Номер: 36
- Год издания: 2012
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 18893
- Последняя страница: 18901
- DOI: 10.1039/C2JM33874B
- Аннотация: Hard-magnetic plate-like nanoparticles of SrFe12O19 were synthesised hydrothermally. The particles, fixed in a polymer, exhibited a coercivity in the range 0.9–1.8 kOe, and the saturation magnetization values reached 64 emu g−1. Electrostatically stabilized aqueous colloidal solutions of the plate-like particles with average thickness of 5–8 nm and average diameter of 30–80 nm were prepared. The nanoparticles readily oriented when applying a weak magnetic field as low as a few Oe, and due to the linear dichroism phenomena a strong change in the optical transmittance of the solution took place. The extinction coefficient ratio for the perpendicular and the parallel light's electric field vector relative to the magnetic field direction was found to be up to 4.5. The experimental results were compared with a theoretical model, in which the optical absorption of the nanoparticles was calculated from the polarizability of oblate ellipsoids.
- Добавил в систему: Кушнир Сергей Евгеньевич