Transport properties of superconducting and nonsuperconducting sputtered thin films of Nb--N (critical field)

Journal Article · Mon Sep 01 04:00:00 EDT 1975 · IEEE Trans. Magn.; (United States)

DOI:https://doi.org/10.1109/TMAG.1975.1058859· OSTI ID:7295238

Baixeras, J; Andro, P; Cazabat, M

By changing the preparation conditions one can indeed obtain superconducting samples or very resistive samples. In the first case the behavior of the slope of the critical field versus temperature curves near T/sub c/ have been studied, and it is shown that (dH/sub c2//dI)/sub Ic/ is a regular increasing function of the Ginzburg-Landau parameter kappa. The temperature dependent resistivity rho(T), of the nonsuperconducting samples has been measured. The results can be interpreted in terms of hopping conduction in disorderd materials, the resistivity indeed fits well Mott's relation, rho = (rho)/sub 0/(exp (T/T/sub 0/))/sup -1///sup 4/. 22 references.

• Research Organization: Lab. de Genie Electrique, Paris
• OSTI ID: 7295238
• Journal Information: IEEE Trans. Magn.; (United States), Journal Name: IEEE Trans. Magn.; (United States) Vol. MAG-11:5; ISSN IEMGA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FILMS
MAGNETIC FIELDS
NIOBIUM COMPOUNDS
NIOBIUM NITRIDES
NITRIDES
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS