Solids

Superradiation and synthesis of metal nanoparticles in a polystyrene composite with Eu multi-spin complexes under fast uniaxial compression

A. I. Aleksandrov^a, V. G. Shevchenko^a, S. S. Abramchuk^b, S. B. Zezin^c, S. V. Fokin^d, V. I. Ovcharenko<sup>d

a</sup> N. S. Enikolopov Institute of Synthetic Polymer Materials RAS, Moscow
^b A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, Moscow
^c Lomonosov Moscow State University
^d International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk

Abstract: Composites of heterospin molecular magnet [Eu$^{\mathrm{III}}$(SQ)$_3$bipy] in a polystyrene (PS) matrix have been synthesized. This complex [Eu$^{\mathrm{III}}$(SQ)$_3$bipy] contains four paramagnetic centers – the Eu$^{3+}$ ion and three SQ ligands (SQ-3,6-di-tert-butyl benzoquinone radical anion); bipy (bipyridyl) is diamagnetic. It has been established that intensive mechanical activation of [Eu$^{\mathrm{III}}$(SQ)$_3$bipy]/PS samples leads to an reological explosion, as a result of which radio frequency superradiance, the appearance of free electrons and the formation of Eu metal nanoparticles are observed. The duration of this process is 10 ns.

Keywords: superradiance, reological, explosion, metal, nanoparticles, europium.

Received: 25.06.2021
Revised: 27.10.2021
Accepted: 03.11.2021

DOI: 10.21883/jtf.2022.02.52015.194-21

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