Effects of high-fluence neutron irradiation on the superconducting properties of magnetron sputtered NbN films

Journal Article · Mon Aug 01 04:00:00 EDT 1988 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.341850· OSTI ID:6976448

Gregshammer, P; Weber, H W; Kampwirth, R T; Gray, K E

Neutron irradiation experiments on sputtered NbN films up to a fluence of 10/sup 23/ m/sup -2/ (E>0.1 MeV) are reported. Both the transition temperatures T/sub c/ and the normal state resistivities change only slightly with neutron fluence. While the critical current densities degrade (up to 30%) in an intermediate field range (6--14 T), the high field data show virtually no change of J/sub c/ due to the radiation-induced increase of B/sub c//sub 2/ and the occurrence of peak effects near the upper critical field. It is therefore proven experimentally that NbN is an extremely radiation-hard high field superconductor.

• Research Organization: Atominstitut der O-dieresissterreichischen Universitaeten, A-1020 Vienna, Austria, and Max Planck Institut fuer Festkorperforschung, HML, F-38042 Grenoble, France
• OSTI ID: 6976448
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 64:3; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360206* -- Ceramics
Cermets
& Refractories-- Radiation Effects
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARYONS
CRITICAL CURRENT
CRITICAL FIELD
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
ELECTRON TUBES
ELECTRONIC EQUIPMENT
ELEMENTARY PARTICLES
EQUIPMENT
FERMIONS
HADRONS
MAGNETIC FIELDS
MAGNETRONS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
NEUTRONS
NIOBIUM COMPOUNDS
NIOBIUM NITRIDES
NITRIDES
NITROGEN COMPOUNDS
NUCLEONS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
PNICTIDES
RADIATION EFFECTS
REFRACTORY METAL COMPOUNDS
SPUTTERING
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
TYPE-II SUPERCONDUCTORS