Effect of impurities on the residual resistance of niobium

Journal Article · Fri Jun 01 04:00:00 EDT 1979 · Sov. J. Low Temp. Phys. (Engl. Transl.); (United States)

OSTI ID:5806548

Aleksandrov, B N; Kovtun, G P; Elenskii, V A

The effect of three impurities, Ru, Re, and Os, on the electrical resistance of niobium at 20.4 and 77.3 /sup 0/K was studied. Using 99.95% pure niobium with residual resistivity ratio rho/sub 0//rho/sub 293/=7x10/sup -2/ specimens were prepared over the concentration range of 0.3 to 5% by weight. At 20.4 /sup 0/K values of ..delta..rho/c of 2.7, 2.2, and 1.4 ..mu cap omega..xcm/at.% were found for Ru, Os, and Re, respectively. Data for 15 other impurity elements in niobium, found in the literature and often very approximate, are presented.

• Research Organization: Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR
• OSTI ID: 5806548
• Journal Information: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States) Vol. 5:6; ISSN SJLPD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
COMPACTING
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
HIGH VACUUM
IMPURITIES
LOW TEMPERATURE
MELTING
METALS
NIOBIUM
OSMIUM
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLATINUM METALS
POWDERS
REFRACTORY METALS
RHENIUM
RUTHENIUM
TRANSITION ELEMENTS
VERY LOW TEMPERATURE