Superconductivity and Moessbauer effect of Nb/sub 3/Sn produced by Sn implantation

Journal Article · Sun Oct 01 00:00:00 EDT 1978 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00117062· OSTI ID:6605553

Soeder, J M; Stritzker, B; Bolz, J; Glass, J C; Pobell, F

We have implanted Sn, Ge, and Si into Nb films. The resulting Nb-Sn compounds and their annealing behavior have been analyzed by the Moessbauer effect and compared to samples obtained by diffusion of Sn into Nb foils. Moessbauer spectra show that Nb/sub 3/Sn is obtained just by implantation, but with a T/sub c/ of only 5 K. The 925/sup 0/C annealing temperature necessary to form the A15 structure with long-range order of Nb chains and T/sub c/ values up to 17.8 K is at least 100/sup 0/C higher in implanted samples than in samples than in samples prepared by diffusion of Sn into Nb. This is explained in terms of implantation-induced lattice defects. The metastable A15 phases of Nb/sub 3/Ge and Nb/sub 3/Si could not be formed by Ge or Si implantation, regardless of target or annealing temperature. It is suggested that the high-energy ions only form phases stable at high temperatures and with low T/sub c/ values.

• Research Organization: Institut fuer Festkoerperforschung, Kernforschungsanlage Juelich, Juelich, West Germany
• OSTI ID: 6605553
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 33:1; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ANNEALING
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FILMS
GERMANIUM
HEAT TREATMENTS
IMPLANTS
METALS
MOESSBAUER EFFECT
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
PHYSICAL PROPERTIES
SEMIMETALS
SILICON
STRESS RELAXATION
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TIN
TIN ALLOYS
TRANSITION TEMPERATURE