Formation of Magnetic Nanocrystals in Germanate Glasses Doped with Fe and Dy
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Переводная
|
| Журнал |
Nanotechnologies in Russia
ISSN: 1995-0780
, E-ISSN: 1995-0799
|
| Вых. Данные |
Год: 2008,
Том: 3,
Номер: 11-12,
Страницы: 722-728
Страниц
: 7
DOI:
10.1134/S1995078008110098
|
| Авторы |
Edelʹman I.S.
1
,
Ivanova O.S.
1,2
,
Zabluda V.N.
1
,
Ivantsov R.D.
1
,
Bondarenko G.V.
1
,
Zaikovskii V.I.
3
,
Stepanov S.A.
4
|
| Организации |
| 1 |
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia
|
| 2 |
Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk, 660041 Russia
|
| 3 |
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 5, Novosibirsk, 630090 Russia
|
| 4 |
Vavilov State Optical Institute, All-Russia Research Center, ul. Babushkina 36/1, St. Petersburg, 192371 Russia
|
|
Информация о финансировании (2)
|
1
|
Российский фонд фундаментальных исследований
|
07-02-92174
|
|
2
|
Министерство образования и науки Российской Федерации
|
2.1.1.7376
|
Magnetic nanocomposites were synthesized from germanate glasses doped with iron and dysprosium
oxides at low concentrations. The formation of nanoparticles (~5–20 nm in size) in glasses subjected to
heat treatment under different conditions was observed using high-resolution electron microscopy. Nanoparticles
had a well-resolved crystal structure. X-ray fluorescence microprobe analysis showed that iron and dysprosium
are concentrated in particles. The examination of the field dependences of the magneto-optical effect
revealed magnetic ordering in particles. A comparison of the interplanar distances obtained using electron
microdiffraction with those of the known iron oxide compounds did not lead to unambiguous results. Almost
all specific features in the magnetic circular dichroism spectra of the glasses corresponded to the features previously
observed in the spectra of garnet ferrites. On this basis, it was assumed that the particles formed in the
germanate glasses have a distorted garnet structure.