Next Article in Journal
Synthesis, Structure and Magnetic Study of a Di-Iron Complex Containing N-N Bridges
Previous Article in Journal
Ni(II) Dimers of NNO Donor Tridentate Reduced Schiff Base Ligands as Alkali Metal Ion Capturing Agents: Syntheses, Crystal Structures and Magnetic Properties
Open AccessFeature PaperArticle

Diamagnetism of Bulk Graphite Revised

Division of Superconductivity and Magnetism, Felix-Bloch-Institute for Solid State Physics, Faculty of Physics and Earth Sciences, University of Leipzig, Linnéstraße 5, 04103 Leipzig, Germany
*
Author to whom correspondence should be addressed.
Magnetochemistry 2018, 4(4), 52; https://doi.org/10.3390/magnetochemistry4040052
Received: 15 October 2018 / Revised: 15 November 2018 / Accepted: 16 November 2018 / Published: 22 November 2018
Recently published structural analysis and galvanomagnetic studies of a large number of different bulk and mesoscopic graphite samples of high quality and purity reveal that the common picture assuming graphite samples as a semimetal with a homogeneous carrier density of conduction electrons is misleading. These new studies indicate that the main electrical conduction path occurs within 2D interfaces embedded in semiconducting Bernal and/or rhombohedral stacking regions. This new knowledge incites us to revise experimentally and theoretically the diamagnetism of graphite samples. We found that the c-axis susceptibility of highly pure oriented graphite samples is not really constant, but can vary several tens of percent for bulk samples with thickness t 30 μm, whereas by a much larger factor for samples with a smaller thickness. The observed decrease of the susceptibility with sample thickness qualitatively resembles the one reported for the electrical conductivity and indicates that the main part of the c-axis diamagnetic signal is not intrinsic to the ideal graphite structure, but it is due to the highly conducting 2D interfaces. The interpretation of the main diamagnetic signal of graphite agrees with the reported description of its galvanomagnetic properties and provides a hint to understand some magnetic peculiarities of thin graphite samples. View Full-Text
Keywords: graphite; diamagnetism; thickness dependence; susceptibility; interfaces; conductivity; graphene graphite; diamagnetism; thickness dependence; susceptibility; interfaces; conductivity; graphene
Show Figures

Graphical abstract

MDPI and ACS Style

Semenenko, B.; Esquinazi, P.D. Diamagnetism of Bulk Graphite Revised. Magnetochemistry 2018, 4, 52. https://doi.org/10.3390/magnetochemistry4040052

AMA Style

Semenenko B, Esquinazi PD. Diamagnetism of Bulk Graphite Revised. Magnetochemistry. 2018; 4(4):52. https://doi.org/10.3390/magnetochemistry4040052

Chicago/Turabian Style

Semenenko, Bogdan; Esquinazi, Pablo D. 2018. "Diamagnetism of Bulk Graphite Revised" Magnetochemistry 4, no. 4: 52. https://doi.org/10.3390/magnetochemistry4040052

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop