Photoinduced Room-Temperature Magnetism of Low Curie Temperature Cu–Ni Nanoparticles in Polymer Composites with Rubrene Microcrystals

B. M. Rumyantsev; Румянцев Б. М.; S. B. Bibikov; Бибиков С. Б.; V. G. Leontiev; Леонтьев В. Г.; V. I. Berendyaev; Берендяев В. И.

doi:10.31857/S0023119323020110

Photoinduced Room-Temperature Magnetism of Low Curie Temperature Cu–Ni Nanoparticles in Polymer Composites with Rubrene Microcrystals

Authors: Rumyantsev B.M.¹, Bibikov S.B.¹, Leontiev V.G.², Berendyaev V.I.¹
Affiliations:
1. nuel Institute of Biochemical Physics, Russian Academy of Sciences
2. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Issue: Vol 57, No 2 (2023)
Pages: 108-113
Section: PHOTONICS
URL: https://rjsvd.com/0023-1193/article/view/661514
DOI: https://doi.org/10.31857/S0023119323020110
EDN: https://elibrary.ru/NHDBYD
ID: 661514

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Abstract

A relation has been established between the decrement of the low-field magnetic spin effect (measured by the luminescence of polymer films of composites with rubrene microcrystals), caused by the addition of magnetic Cu–Ni nanoparticles with a low Curie temperature (TC = 40–60°C), and the photoinduced particle magnetic moment exceeding the dark moment. Based on the study of the temperature dependence of the decrement and its comparison with the thermal demagnetization of the dark magnetic moment, a conclusion was made about a possible mechanism for the photothermal magnetization of nanoparticles

Keywords

magnetic-spin effect, photoluminescence, magnetic nanoparticles, rubrene, charge carriers, exciton

References

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