Effect of composition and neutron irradiation on the upper critical field of Nb/sub 3/Pt

Journal Article · Mon Dec 01 04:00:00 EST 1980 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00114371· OSTI ID:6572454

Lambert, S E; Maple, M B; Sweedler, A R; Moehlecke, S

The upper critical field H/sub c/2(T) of the A15 compound Nb/sub 100-x/Pt/sub x/(19< or = x < or = 29.1) has been measured as a function of temperature T for various compositions and levels of irradiation with fast reactor neutrons. Compositions ranging from 19 to 29 at. % Pt and neutron fluences up to 16 x 10/sup 18/ n/cm/sup 2/ (E > 1 Me V) were studied. A stoichiometric sample that had been rapidly quenched from the liquid (splat-cooled) was also investigated. For the unirradiated samples, T/sub c/ exhibits a maximum of 10.4 K at the stoichiometric composition, while both H/sub c/2(0) and dH/sub c/2(T)/dT/sub T/ = T/sub c/ attain their maximum values on the Pt-rich side of stoichiometry. The irradiated samples show a decrease of H/sub c/2(0) with increasing neutron fluence. The results are discussed in terms of antisite disorder and a strong correlation is obtained between decreasing H/sub c/2(0) and increasing disorder of the Nb atomic sites.

• Research Organization: Univ. of California, San Diego, La Jolla
• DOE Contract Number: EY-76-C-02-0016
• OSTI ID: 6572454
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 41:5/6; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals &amp; Alloys-- Physical Properties
360406* -- Materials-- Polymers &amp; Plastics-- Radiation Effects-- (-1987)
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
BARYONS
BETA-W LATTICES
CRITICAL FIELD
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HADRONS
INFORMATION
MAGNETIC FIELDS
NEUTRONS
NIOBIUM ALLOYS
NUCLEONS
NUMERICAL DATA
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
QUANTITY RATIO
RADIATION EFFECTS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE