Effect of saturation with helium atoms and subsequent annealing on the structure and superconducting properties of niobium

Journal Article · Sun Jan 01 04:00:00 EST 1978 · Sov. J. Low Temp. Phys. (Engl. Transl.); (United States)

OSTI ID:6214787

Volkov, M P; Sokurskii, Y N; Tsypkin, S I; Chuev, V I; Shishov, V N

The structure and superconducting properties of niobium foils, uniformly saturated with helium atoms up to a concentration of 0.5 at.% by injection in an electrostatic accelerator, were investigated. It is shown that both saturation with helium and subsequent annealing leads to an increase of H/sub c2/, j/sub c/ and to the appearance of a ''peak-effect'' on the j/sub c/(H) curves. Annealing of the irradiated samples up to 800--1000/sup 0/C leads to a drop of the ratio of the electrical resistances and to a reduction of H/sub c2/ (T/sub c/ is varying insignificantly). After annealing at 900/sup 0/C and above, gas bubbles appear, which are accompanied by an increase of j/sub c/.

• Research Organization: State Committee for the Utilization of Atomic Energy
• OSTI ID: 6214787
• Journal Information: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States) Vol. 4:1; ISSN SJLPD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
360106* -- Metals & Alloys-- Radiation Effects
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANNEALING
CRITICAL CURRENT
CRITICAL FIELD
CRYOGENIC FLUIDS
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
FLUIDS
FOILS
HEAT TREATMENTS
HELIUM
ION IMPLANTATION
MAGNETIC FIELDS
METALS
NIOBIUM
NONMETALS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RARE GASES
REFRACTORY METALS
SUPERCONDUCTIVITY
TRANSITION ELEMENTS