Nb-Si A15 compounds produced by liquid quenching
- 1 July 1979
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 50 (7), 4763-4766
- https://doi.org/10.1063/1.326535
Abstract
A metastable A15‐type structure has been obtained in binary Nb‐Si alloys containing 18.8±0.5 at.% Si by very rapid quenching (splat cooling) from the liquid state. Superconducting onset temperatures (Tc) of about 4 K were measured on these samples. The relatively low Tc values can be a result of the nonstoichiometric (Nb‐rich) composition, residual antisite disorder, or other types of defect structures. Ternary additions such as Sn, Pt, or Ir seem to improve the stoichiometry of the A15 phase and a Tc of 13 K was obtained for the analyzed composition Nb75Si16Sn9.Keywords
This publication has 20 references indexed in Scilit:
- Equilibrium phase fields in the vanadium-osmium systemJournal of the Less Common Metals, 1979
- Metastabile kristalline und glasartige phasen im system Magnesium-GalliumJournal of the Less Common Metals, 1979
- The phase diagram of the niobium-germanium systemJournal of the Less Common Metals, 1978
- Study of NbSi compounds deposited by chemical vapor depositionJournal of the Less Common Metals, 1978
- The dependence of the superconducting transition temperature on silicon concentration in the NbAlSi ternary systemJournal of the Less Common Metals, 1978
- Atomic radii and lattice parameters of the A15 crystal structureJournal of the Less Common Metals, 1977
- Ternary A15-phase regions in the Nb-Sn-Si and Nb-Sn-As systemsJournal of the Less Common Metals, 1977
- Observations on Nb3Si and the relative stability of A15 versus Ti3P-type structuresJournal of the Less Common Metals, 1975
- The phase diagram of the system vanadium-gold and the superconducting properties of the V3Au phaseJournal of the Less Common Metals, 1975
- New tetragonal compounds Nb3Si and Ta3SiJournal of the Less Common Metals, 1969