Abstract
Composites of a heterospin molecular magnet [Eu(III)(SQ)3bipy] in a polystyrene (PS) matrix have been synthesized. The [EuIII(SQ)3bipy] complex contains four paramagnetic centers—the Eu3+ 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(III)(SQ)3bipy]/PS samples leads to a rheological 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.
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The authors express their gratitude to the Center for Collective Use of the IPHF RAS for assistance in obtaining EPR data.
The work was carried out with the financial support of the Ministry of Education and Science of Russia (grant no. FFSM-2021-0006)
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Aleksandrov, A.I., Shevchenko, V.G., Aleksandrov, I.A. et al. Superradiation and Synthesis of Metal Nanoparticles in a Polystyrene Composite with Eu Multi-spin Complexes under Rapid Uniaxial Compression. Tech. Phys. 67, 126–135 (2022). https://doi.org/10.1134/S106378422203001X
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DOI: https://doi.org/10.1134/S106378422203001X