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S e p t e m b e r 2 4 - 2 6 , 2 0 1 8 | B u d a p e s t , H u n g a r y
OF EXCELLENCE
IN INTERNATIONAL
MEETINGS
YEARS
Magnetic Materials 2018 Materials Science and Nanotechnology | Volume 2
MAGNETISM AND
MAGNETIC MATERIALS
2nd International Conference on
Vladimir V Matveev, Mater Sci Nanotechnol 2018, Volume 2
NMR-IN-MAGNETICS AS USEFUL TOOL FOR
INVESTIGATION OF LOCAL STRUCTURE OF
MAGNETIC NANOMATERIALS
Vladimir V Matveev
Saint Petersburg State University, Russia
The lecture is devoted to nuclear magnetic resonance (NMR) in the
magnetically ordered state also known as NMR in magnetics or spin echo,
or FNR. This technique possesses a potential for effective investigation and
testing of various magnetic materials, especially in the nanocrystalline and/or
in nanocomposite state. In the first part of the lecture an introduction is done
to basic physics of pulse NMR in magnetics together with a brief description
of the method development since its appearance, about 60 years ago. The
method was successfully applied to a lot of magnetics such as metallic
cobalt and cobalt-containing materials, including films, multilayers and
nanoparticles; various ferro- and ferrimagnetic compounds, Heusler alloys,
intrinsically inhomogeneous perovskite-like CMR manganites etc. Several
works of different years demonstrate that NMR technique is the useful
addition to well-known diagnostic methods of magnetic materials and allows
one to get unique information. In the second part of the lecture we review
applications of the technique to some novel magnetic structures/materials
during the last few decades. We describe a determination of the core-shell
structure of bimetallic FeCo nanoparticles, an observation of ferromagnetic
clusters in spin-glass manganites far above Curie temperature, molecular
magnets i.e., array of molecular complexes with several 3d-metal ions, Mn-
doped magnetic semiconductors, and a detection of zero-field 13C NMR
signal in so-called magnetic carbon i.e., in carbon-based magnetic materials
free from metallic elements.
Vladimir V Matveev has completed his PhD from Se-
menov Institute of Chemical Physics of USSR Acade-
my of Sciences. He is a Senior Researcher of Depart-
ment of Nuclear-Physics Investigation Techniques
of Saint Petersburg State University, Russia. He has
published more than 25 papers in reputed journals
and made a lot of reports/lectures at international
conferences.
BIOGRAPHY