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Solid-state synthesis and characterization of ferromagnetic Mn5Ge3 nanoclusters in GeO/Mn thin films
Автор | Myagkov, V. G. | |
Автор | Matsynin, A. A. | |
Автор | Bykova, L. E. | |
Автор | Zhigalov, V. S. | |
Автор | Mikhlin, Y. L. | |
Автор | Velikanov, D. A. | |
Автор | Aleksandrovsky, A. S. | |
Автор | Bondarenko, G. N. | |
Дата внесения | 2020-01-20T08:04:31Z | |
Дата, когда ресурс стал доступен | 2020-01-20T08:04:31Z | |
Дата публикации | 2019-04 | |
Библиографическое описание | Myagkov, V. G. Solid-state synthesis and characterization of ferromagnetic Mn5Ge3 nanoclusters in GeO/Mn thin films [Текст] / V. G. Myagkov, A. A. Matsynin, L. E. Bykova, V. S. Zhigalov, Y. L. Mikhlin, D. A. Velikanov, A. S. Aleksandrovsky, G. N. Bondarenko // Journal of Alloys and Compounds. — 2019. — Т. 782. — С. 632-640 | |
ISSN | 09258388 | |
URI (для ссылок/цитирований) | https://www.sciencedirect.com/science/article/pii/S0925838818346735?via%3Dihub | |
URI (для ссылок/цитирований) | https://elib.sfu-kras.ru/handle/2311/129823 | |
Аннотация | Mn5Ge3 films are promising materials for spintronic applications due to their high spin polarization and a Curie temperature above room temperature. However, non-magnetic elements such as oxygen, carbon and nitrogen may unpredictably change the structural and magnetic properties of Mn5Ge3 films. Here, we use the solid-state reaction between Mn and GeO thin films to describe the synthesis and the structural and magnetic characterization of Mn5Ge3(Mn5Ge3Oy)-GeO2(GeOx) nanocomposite materials. Our results show that the synthesis of these nanocomposites starts at 180°С when the GeO decomposes into elemental germanium and oxygen and the resulting Ge atoms immediately migrate into the Mn layer to form ferromagnetic Mn5Ge3 nanoclusters. At the same time the oxygen atoms take part in the synthesis of GeOx and GeO2 oxides and also migrate into the Mn5Ge3 lattice to form Mn5Ge3Oy Nowotny nanoclusters. Magnetic analysis assumes the general nature of the Curie temperature increase in carbon-doped Mn5Ge3Cx and Mn5Ge3Oy films. Our findings prove that not only carbon, but oxygen may contribute to the increase of the saturation magnetization and Curie temperature of Mn5Ge3-based nanostructures. | |
Тема | Mn-Ge system | |
Тема | Thin-film solid-state reactions | |
Тема | Mn5Ge3 alloy | |
Тема | Nowotny | |
Тема | Mn5Ge3Oy phase | |
Тема | magnetic properties | |
Название | Solid-state synthesis and characterization of ferromagnetic Mn5Ge3 nanoclusters in GeO/Mn thin films | |
Тип | Journal Article | |
Тип | Journal Article Preprint | |
Страницы | 632-640 | |
ГРНТИ | 29.19.16 | |
Дата обновления | 2020-01-20T08:04:31Z | |
DOI | 10.1016/j.jallcom.2018.12.126 | |
Институт | Институт инженерной физики и радиоэлектроники | |
Подразделение | Базовая кафедра фотоники и лазерных технологий | |
Журнал | Journal of Alloys and Compounds | |
Квартиль журнала в Scopus | Q1 | |
Квартиль журнала в Web of Science | Q1 |