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Abstract 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… Click to show full abstract
Abstract 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.
Journal Title: Journal of Magnetism and Magnetic Materials
Year Published: 2019
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