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Microstructure and magnetization of doped y-ba-ca-o materials prepared by melt quench and post annealing method
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Talmy, I. G. Thorpe, A. N. Alterescu, S. Michael, K. A. Haught, D. A. Barkatt, A. Hojaji, H. Hu, S. |
| Copyright Year | 1990 |
| Description | Y-Ba-Cu-O bulk materials prepared using the melt quench and post annealing method were shown to have very high maximum as well as remanent magnetization. Studies were carried out on materials prepared using this method which deviate from the Y:Ba:Cu = 1:2:3 stoichiometry. In one series of materials, only the stoichiometry was changed, in particular by introducing an excess of yttrium. In other cases, dopants including several rare earths were introduced. Effects of variations in composition on microstructure and phase evolution are discussed, as well as effects on the magnetic susceptibility and on the magnetization. The results show that doped materials can exhibit improvements in magnetic properties. Furthermore, the use of dopants sheds light on the role of defect sites in flux pinning. |
| File Size | 34344 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19900018487 |
| Archival Resource Key | ark:/13960/t3sv2gx1h |
| Language | English |
| Publisher Date | 1990-04-01 |
| Access Restriction | Open |
| Subject Keyword | Solid-state Physics Stoichiometry Annealing Flux Pinning Doped Crystals Magnetization Magnetic Permeability Superconductors Materials Barium Oxides Microstructure Copper Oxides Yttrium Oxides Magnetic Properties Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
