Vol. 11, no.2, 2019
РусскийEnglish
NANOSYSTEMS
MAGNETOCALORIC EFFECT IN CARBON-CONTAINING COMPOUNDS
Viktor V. Korolev, Tatiana N. Lomova, Anna G. Ramazanova
G.A. Krestov Institute of Solutions Chemistry RAS, http://www.isc-ras.ru
Ivanovo 153045, Russian Federation
Received 10.06.2019, accepted 21.06.2019
Abstract. The review is devoted to carbon-containing compounds with magnetic properties. It considers recent developments in the problem of synthesis and studying physico-chemical properties of single-molecule magnets (SMMs). It is shown that single-molecule magnets, such as graphene and its donor-acceptor complexes, metal complexes with Schiff’s bases, paramagnetic high-spin complexes of porphyrins/phthalocyanines, as well as 3D nanoparticles of metal oxides and hybrid composites of magnetic nanoparticles with graphene have a large and even giant magnetocaloric effect at temperatures close to room conditions, i.e. beyond the temperature range of magnetic transitions. For the first time, the behaviour of such molecular materials has been determined by a direct method on an original microcalorimetric apparatus and the first data on the interconnection between the chemical structure of their molecules and magnetothermal properties have been obtained.
Keywords: single-molecule magnet, magnetocaloric effect, porphyrin, fullerene, graphene, Schiff’s base
UDC 544.032.53
RENSIT, 2019, 11(2):199-216 DOI: 10.17725/rensit.2019.11.199
Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/283/11(2)199-216e.pdf