1. 
|
Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sun S.-J., Hsu, Hua-Shu, Ovchinnikov S. G., Chen G.-L.
Заглавие : Theoretical investigation of magnetic properties in interfaces of magnetic nanoparticles and amorphous carbons
Место публикации : J. Magn. Magn. Mater.: Elsevier, 2017. - Vol. 432. - P.102-105. - ISSN 03048853 (ISSN), DOI 10.1016/j.jmmm.2017.02.001
Примечания : Cited References: 21. - We would like to thank the Ministry of Science and Technology, Taiwan, for the Grant No. MOST 104-2112-M-390-001 and 104-2923-M-390-001-MY3 (Shih-Jye Sun). The work is supported also by the President of Russia program of the leading scientific schools, Grant NSh-7559.2016.2.
Ключевые слова (''Своб.индексиров.''): antiferroelectricity--antiferromagnetism--ferromagnetism--molecular dynamics--nanomagnetics--nanoparticles--spin waves--antiferro-magnetic interactions--antiferromagnetics--kondo interactions--magnetic nano-particles--molecular dynamics simulations--spinwave excitation--theoretical investigations--theoretical modeling--amorphous carbon
Аннотация: Based on the experimental finding of the exchange bias in amorphous carbon samples with embedded Co nanoparticles and on the graphited character of the amorphous carbon interface confirmed by molecular dynamics simulations we have proposed the interface of graphited carbon to be antiferromagnetic. A theoretical model, which comprises the Kondo interactions in the interfaces of Co nanoparticles and the induced antiferromagnetic interactions in the graphited carbons, is employed to evaluate the ferromagnetism of the interfaces of Co nanoparticles. We have shown that the ferromagnetism of interfaces of Co nanoparticles will be enhanced by the increase of antiferromagnetic interaction as well as the increase of electron density in the graphited carbons. In particular, we found that the antiferromagnetic interactions in graphited carbons will change the spin-wave excitation in interfaces of Co nanoparticles from the quasiacoustic mode to the quasioptical one. © 2017 Elsevier B.V.
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие
|
Главная
Каталог книг и брошюр библиотеки ИФ СО РАН