Resistivity of high-Tc, 1 at % Ti-substituted Nb3Ge

✍ Scribed by F. J. Cadieu; K. C. Hass

• Publisher: Springer US
• Year: 1980
• Tongue: English
• Weight: 363 KB
• Volume: 39
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00115624

✦ Synopsis

Measurements are presented of the resistivity in samples of O. 17 ~ x <~ 0.24, from the superconducting transition temperature Tc to 300 K. The Tc attains its maximum value of above 22 K and the residual resistivity its minimum value at the same off-stoiehiometric composition when x = 0.205. At this same value of x the transition width is narrowest and the residual resistivity extrapolates to a finite value, indicating a comparatively low resistance ratio is to be expected. The resistance ratio achieved in these samples with Ti substitution is comparable to that achieved in the best samples of pure Nb3Ge and is indicative of the short mean free path in this system.