Superparamagnetic Behaviour of Metallic Co Nanoparticles According to Variable Temperature Magnetic Resonance | Sciact - CRIS-system of Boreskov Institute of Catalysis

Superparamagnetic Behaviour of Metallic Co Nanoparticles According to Variable Temperature Magnetic Resonance Full article

Journal

PCCP: Physical Chemistry Chemical Physics
ISSN: 1463-9076 , E-ISSN: 1463-9084

Output data

Year: 2021, Volume: 23, Number: 4, Pages: 2723-2730 Pages count : 8 DOI: 10.1039/d0cp05963c

Tags

Aspect ratio; Cobalt; Cobalt metallography; Ferromagnetic resonance; High resolution transmission electron microscopy; Nanomagnetics; Nanoparticles; Nuclear magnetic resonance spectroscopy; Size distribution; Superparamagnetism

Authors

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

Affiliations

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

Funding (4)

1	Ministry of Science and Higher Education of the Russian Federation	ГЗ-2021-2023
2	Russian Foundation for Basic Research	20-33-90184 (АААА-А20-120101390009-0)
3	Ministry of Science and Higher Education of the Russian Federation	075-00586-19-00 (АААА-А19-119012990095-0)
4	French Embassy in Moscow

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.

Yakovlev I.V. , Yakushkin S.S. , Kazakova M.A. , Trukhan S.N. , Volkova Z.N. , Gerashchenko A.P. , Andreev A.S. , Ishchenko A.V. , Martyanov O.N. , Lapina O.B. , d’Espinose de Lacaillerie J-B.
Superparamagnetic Behaviour of Metallic Co Nanoparticles According to Variable Temperature Magnetic Resonance

PCCP: Physical Chemistry Chemical Physics. 2021. V.23. N4. P.2723-2730. DOI: 10.1039/d0cp05963c WOS Scopus РИНЦ

Full text from publisher

Submitted:	Nov 17, 2020
Accepted:	Jan 15, 2021
Published online:	Jan 18, 2021
Published print:	Jan 28, 2021

Web of science	WOS:000614634000020
Scopus	2-s2.0-85100592642
Elibrary	46742234
AN	2021:157578
CAN	175:134418
publication_identifier.pubmed_id_identifier_type	33492314