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This article is cited in 19 scientific papers (total in 19 papers)
CONDENSED MATTER
Observation of persistent currents in finely dispersed pyrolytic graphite
M. Saad, I. F. Gilmutdinov, A. G. Kiiamov, D. A. Tayurskii, S. I. Nikitin, R. V. Yusupov Institute of Physics, Kazan Federal University, Kazan, Russia
Abstract:
The trapped magnetic flux in the finely ground pyrolytic graphite sample annealed at 670 K in air has been observed. Flux trapping occurs on cooling of the sample from room temperature to 10 K in a magnetic field of 1 T. The magnitude and sign of the induced trapped moment remain unchanged when the applied magnetic field is varied within $\pm$1 T at T K. The trapped magnetic flux is manifested in the displacement of the magnetization curve relative to that of the sample cooled in zero field. Displacement magnitude gradually decreases with the temperature increase up to 350 K, not reaching zero. The set of experimental observations probably reflects the presence in the sample of a granular high-temperature superconducting phase.
Received: 15.11.2017
Citation:
M. Saad, I. F. Gilmutdinov, A. G. Kiiamov, D. A. Tayurskii, S. I. Nikitin, R. V. Yusupov, “Observation of persistent currents in finely dispersed pyrolytic graphite”, Pis'ma v Zh. Èksper. Teoret. Fiz., 107:1 (2018), 42–46; JETP Letters, 107:1 (2018), 37–41
Linking options:
https://www.mathnet.ru/eng/jetpl5464 https://www.mathnet.ru/eng/jetpl/v107/i1/p42
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