This chapter discusses the applications of high-Tc superconductors (HTS), where Tc is the critical transition temperature between the superconductive and nonsuperconductive states. Various techniques for vortex visualization have also been proposed in the chapter. HTSs are layered materials and therefore anisotropic. This anisotropy depends on the fact that HTS materials are quasi-2D: CuO planes, with quasi-metallic conduction, separated by quasi-insulating blocking layers give the basic contribution to the superconductivity. The layered conductor is close to the metal-insulator transition so that any slight change in growing conditions as well as any extrinsic nanometric perturbation yields insulating zones in the CuO planes. The crystallographic structures are held together by electrons that form ionic or covalent bonds among the atoms. This property is usually considered a bad property, not only for the unwanted effects of these insulating plaques but also for the anisotropy aspects.

High-Tc superconductors toward small scale applications / Gerbaldo, Roberto; Ghigo, Gianluca; Gozzelino, Laura; Mezzetti, Enrica - In: Handbook of Advanced Electronic and Photonic Materials and Devices / Hari Singh Nalwa (ed.). - [s.l] : Academic Press, 2001. - ISBN 0125137532. - pp. 1-70 [10.1016/B978-012513745-4/50027-5]

High-Tc superconductors toward small scale applications

GERBALDO, Roberto;GHIGO, GIANLUCA;GOZZELINO, LAURA;MEZZETTI, Enrica
2001

Abstract

This chapter discusses the applications of high-Tc superconductors (HTS), where Tc is the critical transition temperature between the superconductive and nonsuperconductive states. Various techniques for vortex visualization have also been proposed in the chapter. HTSs are layered materials and therefore anisotropic. This anisotropy depends on the fact that HTS materials are quasi-2D: CuO planes, with quasi-metallic conduction, separated by quasi-insulating blocking layers give the basic contribution to the superconductivity. The layered conductor is close to the metal-insulator transition so that any slight change in growing conditions as well as any extrinsic nanometric perturbation yields insulating zones in the CuO planes. The crystallographic structures are held together by electrons that form ionic or covalent bonds among the atoms. This property is usually considered a bad property, not only for the unwanted effects of these insulating plaques but also for the anisotropy aspects.
2001
0125137532
Handbook of Advanced Electronic and Photonic Materials and Devices
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/1395326
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