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Radiofrequency Superradiance on Exposure of Paramagnetic Polymer Composites to Elastic Wave Pulses

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Abstract—

A parametric mode of radiofrequency superradiance was found to emerge upon external exposure of a paramagnetic polymer composite to pulses of elastic waves under high pressure. The composite was a polystyrene matrix containing a system of crossed spins on the basis of Co(QH)2–O–Co(QH)2 or Mn(QH)2–O–Mn(QH)2 binuclear clusters (QH is a ligand based on QH2, 3,6-di-tert-butylpyrocatechol), which possess the Dzyaloshinskii–Moriya effect. It was shown that one of the metal atoms of the binuclear cluster in the polystyrene matrix is trapped by the benzene rings of polystyrene by the type of ferrocene. Binuclear clusters form 2D nano-objects with a diameter of 50–100 nm and a thickness of ~1–2 nm. A method for the analysis of these processes and a probable scheme of their emergence are proposed.

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Funding

ESR studies were performed on the equipment of the Center for Shared Use New Materials and Technologies at the Emanuel Institute of Biochemical Physics of the Russian Academy of Sciences, and TEM studies were performed on the equipment of the Center for Shared Use Transmission Electron Microscopy at the Moscow State University. This work was financially supported by the Ministry of Science and Higher Education of the Russian Federation.

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Correspondence to V. G. Shevchenko.

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Translated by K. Utegenov

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Aleksandrov, A.I., Shevchenko, V.G., Aleksandrov, I.A. et al. Radiofrequency Superradiance on Exposure of Paramagnetic Polymer Composites to Elastic Wave Pulses. Polym. Sci. Ser. A 62, 550–561 (2020). https://doi.org/10.1134/S0965545X2004001X

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  • DOI: https://doi.org/10.1134/S0965545X2004001X

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