Superparamagnetic Behaviour of Metallic Co Nanoparticles According to Variable Temperature Magnetic Resonance
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
PCCP: Physical Chemistry Chemical Physics
ISSN: 1463-9076
, E-ISSN: 1463-9084
|
| Вых. Данные |
Год: 2021,
Том: 23,
Номер: 4,
Страницы: 2723-2730
Страниц
: 8
DOI:
10.1039/d0cp05963c
|
| Ключевые слова |
Aspect ratio; Cobalt; Cobalt metallography; Ferromagnetic resonance; High resolution transmission electron microscopy; Nanomagnetics; Nanoparticles; Nuclear magnetic resonance spectroscopy; Size distribution; Superparamagnetism |
| Авторы |
Yakovlev Ilya V.
1,2,3
,
Yakushkin Stanislav S.
1
,
Kazakova Mariya A.
1
,
Trukhan Sergey N.
1
,
Volkova Zoya N.
4
,
Gerashchenko Alexander P.
4
,
Andreev Andrey S.
5
,
Ishchenko Arcady V.
1
,
Martyanov Oleg N.
1
,
Lapina Olga B.
1,2
,
d’Espinose de Lacaillerie Jean-Baptiste
3
|
| Организации |
| 1 |
Boreskov Institute of Catalysis SB RAS, 5 Pr. Lavrentieva, 630090, Novosibirsk, Russia
|
| 2 |
Novosibirsk State University, 1 Pirogova, 630090, Novosibirsk, Russia
|
| 3 |
SIMM, ESPCI Paris, Universite´ PSL, CNRS UMR 7615, 10 Rue Vauquelin, 75005, Paris, France
|
| 4 |
Mikheev Institute of Metal Physics UB RAS, 18 S. Kovalevskoi, 620990, Ekaterinburg, Russia
|
| 5 |
Total Research and Technology Feluy (TRTF), Zone Industrielle C, 7181 Feluy, Belgium
|
|
Информация о финансировании (4)
|
1
|
Министерство науки и высшего образования Российской Федерации
|
ГЗ-2021-2023
|
|
2
|
Российский фонд фундаментальных исследований
|
20-33-90184 (АААА-А20-120101390009-0)
|
|
3
|
Министерство науки и высшего образования Российской Федерации
|
075-00586-19-00 (АААА-А19-119012990095-0)
|
|
4
|
Посольство Франции в России
|
|
Investigating the size distributions of Co nanoparticle ensembles is an important problem, which has no straightforward solution. In this work, we use the combination of 59Co internal field nuclear magnetic resonance (59Co IF NMR) and ferromagnetic resonance (FMR) spectroscopies on a metallic Co nanoparticle sample with a narrow Co nanoparticle size distribution due to encapsulation within the inner channels of carbon nanotubes. High-resolution transmission electron microscopy (TEM) images showed that the nanoparticles can be represented as prolate spheroids, with the majority of particles having an aspect ratio between 1 and 2. This observation has increased the accuracy of superparamagnetic blocking size calculations from Néel relaxation model by introducing the actual volume of the ellipsoids taken from the image processing. 59Co IF NMR and FMR experiments conducted under different temperatures allowed us to observe the thermal blocking of superparamagnetic particles in full accordance with the TEM particle volume distribution. This proved that these magnetic resonance techniques can be used jointly for characterization of Co nanoparticles in the bulk of the sample.