Magnetocaloric effect in reduced graphene oxide
| Autor: | S. P. Gubin, V. V. Korolev, A. Yu. Soloveva, A. G. Ramazanova, O. V. Balmasova, Matvey S. Gruzdev, E. Yu. Buslaeva |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Graphene Oxide Field dependence 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Heat capacity Electronic Optical and Magnetic Materials law.invention Magnetic field chemistry.chemical_compound chemistry law 0103 physical sciences Magnetic refrigeration 0210 nano-technology |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 476:604-607 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2018.12.066 |
| Popis: | The magnetocaloric effect (MCE) in multiplayer graphene flakes was for the first time detected at deferent temperatures. When the magnetic field induction varied from 0 to 1.0 T, the MCE was positive. The MCE field dependence has a linear character. At 298 K, the MCE is equal to 0.01 K. Graphene samples prepared in different manner were characterized by different degree of structural imperfection. It was established that the MCE increases as the content of surface defects in graphene increases. Graphene samples obtained by different methods and having different degree of structural imperfection have different heat capacities. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect