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Susceptibility measurements on the superconducting properties of nb-ge alloys
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Rathz, T. J. |
| Copyright Year | 1981 |
| Description | A susceptibility apparatus to measure superconducting properties of samples made in the MSFC Drop Tube was used to measure the transition temperature (Tc) and susceptibilities of Nb and Nb Ge Alloys prepared in bulk spherical (2-4 mm diameter) form using a 32 m drop tube in which containerless low gravity solidification could take place. Results indicate that a drop tube processing environment was beneficial for increasing the Tc of the superconducting phase of the material over that of arc melted material. The increase in Tc is found to be related to the amount of solidification of the total sample that took place before reaching the bottom of the drop tube. In phase and quadrature phase measurements of the specimen's susceptibility indicated that some improvement in homogeneity takes place in drop tube processing. These phase measurements also indicated little or no shielding of a lower Tc phase by a higher Tc filamentary structure. |
| File Size | 1091732 |
| Page Count | 35 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810010367 |
| Archival Resource Key | ark:/13960/t2m66b571 |
| Language | English |
| Publisher Date | 1981-01-01 |
| Access Restriction | Open |
| Subject Keyword | Solid-state Physics Phase Diagrams Transition Temperature Superconductivity Niobium Alloys Low Gravity Manufacturing Solidification Tables Data Binary Alloys Germanium Alloys Containerless Melts Magnetic Permeability Space Commercialization Cryogenics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
