Magnetization of Ultraviolet-Reduced Graphene Oxide Flakes in Composites Based on Polystyrene
| Autor: | A.N. Bugrov, Alexander N. Ionov, Ruslan Y. Smyslov, Mikhail P. Volkov, M. N. Nikolaeva |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science Oxide 02 engineering and technology 01 natural sciences Article law.invention chemistry.chemical_compound Magnetization symbols.namesake ultraviolet-holed graphene nanosheets law 0103 physical sciences General Materials Science polymer-twisted graphene layers Graphite Composite material 010306 general physics Mesoscopic physics Microscopy QC120-168.85 Graphene superconductivity QH201-278.5 021001 nanoscience & nanotechnology Engineering (General). Civil engineering (General) TK1-9971 graphene-based materials chemistry Ferromagnetism Descriptive and experimental mechanics symbols Polystyrene magnetic properties Electrical engineering. Electronics. Nuclear engineering TA1-2040 0210 nano-technology Raman spectroscopy |
| Zdroj: | Materials, Vol 14, Iss 2519, p 2519 (2021) Materials Volume 14 Issue 10 |
| ISSN: | 1996-1944 |
| Popis: | This work presents our study results of the magnetization of multilayer UV-reduced graphene oxide (UV-rGO), polymer matrix (polystyrene), and a conjugated composite based on them. The mesoscopic structure of the composites synthesized in this work was studied by such methods as X-ray diffraction, SEM, as well as NMR-, IR- and Raman spectroscopy. The magnetization of the composites under investigation and their components was measured using a vibrating-sample magnetometer. It has been shown that the UV-reduction process leads to the formation of many submicron holes distributed inside rGO flakes, which can create edge defects, causing possibly magnetic order in the graphite samples under investigation on the mesoscopic level. This article provides an alternative explanation for the ferromagnetic hysteresis loop in UV-rGO on the base of superconductivity type-II. |
| Databáze: | OpenAIRE |
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