Phase diagram of electron-beam codeposited Nb3Ge: The influence of oxygen and other gases
- 1 January 1977
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Magnetics
- Vol. 13 (1), 311-314
- https://doi.org/10.1109/tmag.1977.1059443
Abstract
Oxygen, air, or chlorine gas present in the vacuum system during evaporation extend the Ge-rich boundary of the A15 phase towards the ideal 3:1 ratio. X-ray evidence indicates the presence of an amorphous component below 775°C which is detrimental to the superconductivity and which is accompanied by an abrupt increase in the A15 lattice constant. Preliminary Auger results indicate that the Nb:O ratio first decreases as the partial pressure of O2increases and then remains constant.Keywords
This publication has 10 references indexed in Scilit:
- Synthesis and stability of Nb3Ge made by electron-beam codepositionApplied Physics Letters, 1976
- Atmosphere effects on Nb3Ge growth and superconductivityApplied Physics Letters, 1976
- Superconducting critical current of sputtered Nb-Ge filmsSolid State Communications, 1975
- Preparation and analysis of superconducting Nb-Ge filmsPhysical Review B, 1975
- Electron beam evaporation synthesis of A15 superconducting compounds: Accomplishments and prospectsIEEE Transactions on Magnetics, 1975
- Chemical vapor deposition of superconducting Nb3Ge having high transition temperaturesApplied Physics Letters, 1974
- Superconductivity with onset above 23° K in NbGe sputtered filmsSolid State Communications, 1974
- Superconductivity in Nb–Ge films above 22 KApplied Physics Letters, 1973
- Supraleitung und Existenzbereich der A15-Phase im System Nb—Al—GeZeitschrift für Naturforschung A, 1970
- Superconductivity ofGePhysical Review B, 1965