2001/06/12 by M. S. Sercheli, Y. Kopelevich, R. Ricardo da Silva +3
Engineering · Materials Science · Physics and Astronomy · #Advancements in Battery Materials #Graphene research and applications #Graphite, nuclear technology, radiation studies #cond-mat
paper · pdf · doi:10.1016/s0038-1098(01)00465-3
10 pages (tex), 5 figures (ps)
arxiv created 2001/06/12 · openalex publication_date 2002/03/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report conduction electron spin resonance measurements performed on highly oriented pyrolitic graphite samples between 10 K and 300 K using S (f = 4 GHz), X (f = 9.4 GHz), and Q (f = 34.4 GHz) microwave bands for the external dc-magnetic field applied parallel (H || c) and perpendicular (H perp c) to the sample hexagonal c-axis. The results obtained in the H || c geometry are interpreted in terms of the presence of an effective internal ferromagnetic-like field Heff-int(T,H) that increases as the temperature decreases and the applied dc-magnetic field increases. We associate the occurrence of the Heff-int(T,H) with the field-induced metal-insulator transition in graphite and discuss its origin in the light of relevant theoretical models.